diff --git a/adhan-webapp/app.py b/adhan-webapp/app.py
index 3487221..2981ee5 100644
--- a/adhan-webapp/app.py
+++ b/adhan-webapp/app.py
@@ -6,9 +6,6 @@ from hijridate import Gregorian
 from functools import lru_cache
 import time
 from concurrent.futures import ThreadPoolExecutor
-import asyncio
-import aiohttp
-from functools import wraps
 
 app = Flask(__name__)
 
@@ -18,12 +15,6 @@ last_api_call = {}
 cached_data = {}
 executor = ThreadPoolExecutor(max_workers=3)  # Voor parallelle API calls
 
-def async_route(f):
-    @wraps(f)
-    def wrapped(*args, **kwargs):
-        return asyncio.run(f(*args, **kwargs))
-    return wrapped
-
 def get_cached_data(key, fetch_func, duration=CACHE_DURATION):
     """Haal data uit cache of voer fetch_func uit als cache verlopen is"""
     current_time = time.time()
@@ -37,67 +28,14 @@ def get_cached_data(key, fetch_func, duration=CACHE_DURATION):
     last_api_call[key] = current_time
     return data
 
-async def fetch_weather_data_async():
-    """Asynchrone versie van weather data ophalen"""
-    try:
-        async with aiohttp.ClientSession() as session:
-            params = {
-                'q': WEATHER_LOCATION,
-                'appid': OPENWEATHER_API_KEY,
-                'units': 'metric',
-                'lang': 'nl'
-            }
-            async with session.get('https://api.openweathermap.org/data/2.5/weather', params=params, timeout=5) as response:
-                data = await response.json()
-                
-                weather_info = {
-                    'temperature': round(data['main']['temp']),
-                    'feels_like': round(data['main']['feels_like']),
-                    'description': data['weather'][0]['description'].capitalize(),
-                    'humidity': data['main']['humidity'],
-                    'wind_speed': round(data['wind']['speed'] * 3.6),
-                    'icon': data['weather'][0]['icon']
-                }
-                return weather_info
-    except Exception as e:
-        print(f"⚠️ Fout bij ophalen weerdata: {e}")
-        return {
-            'temperature': '--',
-            'feels_like': '--',
-            'description': 'Weer niet beschikbaar',
-            'humidity': '--',
-            'wind_speed': '--',
-            'icon': '01d'
-        }
-
-async def fetch_sonos_zones_async():
-    """Asynchrone versie van Sonos zones ophalen"""
-    try:
-        async with aiohttp.ClientSession() as session:
-            async with session.get(f'http://{SONOS_API_IP}:5005/zones', timeout=5) as response:
-                data = await response.json()
-                zones = []
-                for group in data:
-                    for player in group['members']:
-                        zones.append(player['roomName'])
-                return sorted(set(zones))
-    except Exception as e:
-        print(f'Fout bij ophalen Sonos-zones: {e}')
-        return ['Woonkamer', 'Slaapkamer', 'Keuken']
-
-async def fetch_data_parallel_async():
-    """Haal alle data parallel op met asyncio"""
-    weather_task = asyncio.create_task(fetch_weather_data_async())
-    sonos_task = asyncio.create_task(fetch_sonos_zones_async())
-    date_task = asyncio.create_task(asyncio.to_thread(get_date_info))
-    
-    weather, sonos, date = await asyncio.gather(weather_task, sonos_task, date_task)
-    
-    return {
-        'weather': weather,
-        'sonos': sonos,
-        'date': date
+def fetch_data_parallel():
+    """Haal alle data parallel op"""
+    futures = {
+        'weather': executor.submit(fetch_weather_data),
+        'sonos': executor.submit(fetch_sonos_zones),
+        'date': executor.submit(get_date_info)
     }
+    return {key: future.result() for key, future in futures.items()}
 
 # Voeg cache-control headers toe voor statische bestanden
 @app.after_request
@@ -394,8 +332,7 @@ def index():
                            date_info=date_info)
 
 @app.route('/instellingen', methods=['GET', 'POST'])
-@async_route
-async def instellingen():
+def instellingen():
     if request.method == 'POST':
         try:
             # Nieuwe volume instellingen
@@ -472,9 +409,9 @@ async def instellingen():
             print(f"❌ Fout bij opslaan instellingen: {e}")
             # Probeer alsnog door te gaan zonder de Pi volume instelling
             return redirect('/instellingen')
-    
-    # Haal alle data parallel op met asyncio
-    data = await fetch_data_parallel_async()
+
+    # Haal alle data parallel op
+    data = fetch_data_parallel()
     
     return render_template('settings.html',
                          settings=load_settings(),
diff --git a/adhan-webapp/templates/adzkaar.html b/adhan-webapp/templates/adzkaar.html
index 100fe00..eb81bd5 100644
--- a/adhan-webapp/templates/adzkaar.html
+++ b/adhan-webapp/templates/adzkaar.html
@@ -3,6 +3,8 @@
 <head>
   <meta charset="UTF-8">
   <title>Adzkaar na het Gebed</title>
+  <link rel="preconnect" href="https://fonts.googleapis.com">
+  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
   <link rel="stylesheet" href="/static/colors.css">
   <link rel="stylesheet" href="/static/style.css">
   <link href="https://fonts.googleapis.com/css2?family=Cairo:wght@400;600;700&family=Lato:wght@300;400;600&display=swap" rel="stylesheet">
@@ -208,40 +210,28 @@
 </head>
 <body>
   <div class="adzkaar-container">
-    <button class="close-button" onclick="closeAdzkaar()" title="Sluiten">
-      <span class="material-icons">close</span>
-    </button>
-    
-    <div class="countdown-timer" id="countdownTimer">
-      5:00
-    </div>
-
     <div class="adzkaar-header">
-      <h1 class="adzkaar-title">أذكار بعد الصلاة</h1>
-      <p class="adzkaar-subtitle">Adzkaar na het Gebed</p>
+      <h1 class="adzkaar-title">Adzkaar na het Gebed</h1>
+      <p class="adzkaar-subtitle">Herinneringen voor na het gebed</p>
     </div>
 
     <div class="adzkaar-content">
       <div class="dhikr-navigation">
-        <button class="nav-btn" id="prevBtn" onclick="previousDhikr()" disabled>
+        <button class="nav-btn" id="prevBtn" disabled>
           <span class="material-icons">arrow_back</span>
         </button>
-        
-        <div class="dhikr-counter">
-          <span id="currentDhikr">1</span> / <span id="totalDhikr">6</span>
-        </div>
-        
-        <button class="nav-btn" id="nextBtn" onclick="nextDhikr()">
+        <span class="dhikr-counter" id="counter">1/33</span>
+        <button class="nav-btn" id="nextBtn">
           <span class="material-icons">arrow_forward</span>
         </button>
       </div>
 
-      <div class="dhikr-container" id="dhikrContainer">
-        <div class="dhikr-item active" data-index="0">
-          <div class="dhikr-arabic">أَسْتَغْفِرُ اللَّهَ</div>
-          <div class="dhikr-transliteration">Astaghfirullah</div>
-          <div class="dhikr-translation">Ik vraag Allah om vergeving</div>
-          <div class="dhikr-count">3x</div>
+      <div class="dhikr-container">
+        <div class="dhikr-item active" id="dhikr-1">
+          <div class="dhikr-arabic">سُبْحَانَ اللَّهِ</div>
+          <div class="dhikr-transliteration">Subhanallah</div>
+          <div class="dhikr-translation">Glorie zij Allah</div>
+          <div class="dhikr-count">33x</div>
         </div>
 
         <div class="dhikr-item" data-index="1">
@@ -252,27 +242,20 @@
         </div>
 
         <div class="dhikr-item" data-index="2">
-          <div class="dhikr-arabic">سُبْحَانَ اللَّهِ</div>
-          <div class="dhikr-transliteration">Subhan Allah</div>
-          <div class="dhikr-translation">Glorie zij Allah</div>
-          <div class="dhikr-count">33x</div>
-        </div>
-
-        <div class="dhikr-item" data-index="3">
           <div class="dhikr-arabic">الْحَمْدُ لِلَّهِ</div>
           <div class="dhikr-transliteration">Alhamdulillah</div>
           <div class="dhikr-translation">Alle lof zij Allah</div>
           <div class="dhikr-count">33x</div>
         </div>
 
-        <div class="dhikr-item" data-index="4">
+        <div class="dhikr-item" data-index="3">
           <div class="dhikr-arabic">اللَّهُ أَكْبَرُ</div>
           <div class="dhikr-transliteration">Allahu Akbar</div>
           <div class="dhikr-translation">Allah is de Grootste</div>
           <div class="dhikr-count">34x</div>
         </div>
 
-        <div class="dhikr-item" data-index="5">
+        <div class="dhikr-item" data-index="4">
           <div class="dhikr-arabic">لاَ إِلَهَ إِلاَّ اللَّهُ وَحْدَهُ لاَ شَرِيكَ لَهُ لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ</div>
           <div class="dhikr-transliteration">La ilaha illa Allah wahdahu la sharika lah, lahu al-mulku wa lahu al-hamdu wa huwa 'ala kulli shay'in qadir</div>
           <div class="dhikr-translation">Er is geen god behalve Allah alleen, Hij heeft geen partner. Aan Hem behoort de heerschappij en aan Hem behoort alle lof, en Hij heeft macht over alle dingen</div>
@@ -280,109 +263,85 @@
         </div>
       </div>
     </div>
+
+    <div class="countdown-timer" id="countdown">00:00</div>
+    <button class="close-button" id="closeBtn">
+      <span class="material-icons">close</span>
+    </button>
   </div>
 
   <script>
-    let countdownSeconds = {{ duration_minutes }} * 60;
+    // Cache DOM elementen
+    const dhikrItems = document.querySelectorAll('.dhikr-item');
+    const prevBtn = document.getElementById('prevBtn');
+    const nextBtn = document.getElementById('nextBtn');
+    const counter = document.getElementById('counter');
+    const closeBtn = document.getElementById('closeBtn');
+    const countdownEl = document.getElementById('countdown');
+
+    let currentIndex = 0;
+    const totalItems = dhikrItems.length;
     let countdownInterval;
-    let currentDhikrIndex = 0;
-    const totalDhikrs = 6;
-    let autoSwitchInterval;
 
-    function updateCountdown() {
-      const minutes = Math.floor(countdownSeconds / 60);
-      const seconds = countdownSeconds % 60;
-      const display = `${minutes}:${seconds.toString().padStart(2, '0')}`;
-      document.getElementById('countdownTimer').textContent = display;
-      
-      if (countdownSeconds <= 0) {
-        closeAdzkaar();
-        return;
-      }
-      
-      countdownSeconds--;
-    }
-
-    function closeAdzkaar() {
-      clearInterval(countdownInterval);
-      clearInterval(autoSwitchInterval);
-      window.close();
-      // Als window.close() niet werkt (bijv. in kiosk mode), ga terug naar hoofdpagina
-      setTimeout(() => {
-        window.location.href = '/';
-      }, 100);
+    // Update counter display
+    function updateCounter() {
+      counter.textContent = `${currentIndex + 1}/${totalItems}`;
     }
 
+    // Show dhikr item
     function showDhikr(index) {
-      // Verberg alle dhikr items
-      document.querySelectorAll('.dhikr-item').forEach(item => {
-        item.classList.remove('active');
-      });
-      
-      // Toon de geselecteerde dhikr
-      const targetDhikr = document.querySelector(`[data-index="${index}"]`);
-      if (targetDhikr) {
-        targetDhikr.classList.add('active');
-      }
-      
-      // Update counter
-      document.getElementById('currentDhikr').textContent = index + 1;
-      
-      // Update navigation buttons
-      document.getElementById('prevBtn').disabled = index === 0;
-      document.getElementById('nextBtn').disabled = index === totalDhikrs - 1;
+      dhikrItems.forEach(item => item.classList.remove('active'));
+      dhikrItems[index].classList.add('active');
+      currentIndex = index;
+      updateCounter();
+      updateNavigationButtons();
     }
 
-    function nextDhikr() {
-      if (currentDhikrIndex < totalDhikrs - 1) {
-        currentDhikrIndex++;
-        showDhikr(currentDhikrIndex);
-      }
+    // Update navigation buttons
+    function updateNavigationButtons() {
+      prevBtn.disabled = currentIndex === 0;
+      nextBtn.disabled = currentIndex === totalItems - 1;
     }
 
-    function previousDhikr() {
-      if (currentDhikrIndex > 0) {
-        currentDhikrIndex--;
-        showDhikr(currentDhikrIndex);
-      }
-    }
-
-    function autoSwitchDhikr() {
-      if (currentDhikrIndex < totalDhikrs - 1) {
-        currentDhikrIndex++;
-        showDhikr(currentDhikrIndex);
-      } else {
-        // Als we bij de laatste dhikr zijn, begin opnieuw
-        currentDhikrIndex = 0;
-        showDhikr(currentDhikrIndex);
-      }
-    }
-
-    // Keyboard navigation
-    document.addEventListener('keydown', function(event) {
-      if (event.key === 'ArrowRight' || event.key === ' ') {
-        event.preventDefault();
-        nextDhikr();
-      } else if (event.key === 'ArrowLeft') {
-        event.preventDefault();
-        previousDhikr();
-      } else if (event.key === 'Escape') {
-        closeAdzkaar();
+    // Navigation event handlers
+    prevBtn.addEventListener('click', () => {
+      if (currentIndex > 0) {
+        showDhikr(currentIndex - 1);
       }
     });
 
+    nextBtn.addEventListener('click', () => {
+      if (currentIndex < totalItems - 1) {
+        showDhikr(currentIndex + 1);
+      }
+    });
+
+    // Close button handler
+    closeBtn.addEventListener('click', () => {
+      window.close();
+    });
+
+    // Countdown timer
+    function startCountdown(duration) {
+      let timer = duration;
+      clearInterval(countdownInterval);
+      
+      countdownInterval = setInterval(() => {
+        const minutes = parseInt(timer / 60, 10);
+        const seconds = parseInt(timer % 60, 10);
+
+        countdownEl.textContent = `${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
+
+        if (--timer < 0) {
+          clearInterval(countdownInterval);
+          window.close();
+        }
+      }, 1000);
+    }
+
     // Initialize
     showDhikr(0);
-    
-    // Start countdown
-    countdownInterval = setInterval(updateCountdown, 1000);
-    updateCountdown();
-
-    // Start automatische wissel elke 30 seconden
-    autoSwitchInterval = setInterval(autoSwitchDhikr, 30000);
-
-    // Auto-close na ingestelde tijd
-    setTimeout(closeAdzkaar, countdownSeconds * 1000);
+    startCountdown(300); // 5 minuten countdown
   </script>
 </body>
 </html> 
\ No newline at end of file
diff --git a/adhan-webapp/templates/index.html b/adhan-webapp/templates/index.html
index ee46084..89f4699 100644
--- a/adhan-webapp/templates/index.html
+++ b/adhan-webapp/templates/index.html
@@ -4,8 +4,17 @@
   <meta charset="UTF-8">
   <title>Gebedstijden Display</title>
   <link rel="stylesheet" href="/static/style.css">
+  <link rel="preconnect" href="https://fonts.googleapis.com">
+  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
   <link href="https://fonts.googleapis.com/css2?family=Cairo:wght@700&family=Lato:wght@400;700&display=swap" rel="stylesheet">
   <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
+  <script>
+    // Voorkom FOUC (Flash of Unstyled Content)
+    document.documentElement.style.visibility = 'hidden';
+    window.addEventListener('load', function() {
+      document.documentElement.style.visibility = 'visible';
+    });
+  </script>
 </head>
 <body>
   <div class="app">
@@ -164,6 +173,14 @@
   </div>
 
   <script>
+    // Cache DOM elementen
+    const currentTimeEl = document.getElementById('current-time');
+    const countdownEl = document.getElementById('countdown');
+    const muteBtn = document.getElementById('muteBtn');
+    const muteIcon = document.getElementById('muteIcon');
+    const adhanAudio = document.getElementById('adhanAudio');
+    const adzkaarModal = document.getElementById('adzkaarModal');
+
     // Prayer times data from server
     window.prayerTimes = [
       {% for naam, tijd in gebedstijden.items() %}
@@ -176,11 +193,45 @@
       {% endfor %}
     ];
     const nextPrayerTime = "{{ next_time }}";
-    const hadithInterval = {{ settings.hadith_interval_seconds or 30 }} * 1000; // Convert to milliseconds
-  </script>
-  <script src="/static/countdown.js"></script>
-  <script>
-    window.onload = function () {
+    const hadithInterval = {{ settings.hadith_interval_seconds or 30 }} * 1000;
+
+    // Debounce functie voor betere performance
+    function debounce(func, wait) {
+      let timeout;
+      return function executedFunction(...args) {
+        const later = () => {
+          clearTimeout(timeout);
+          func(...args);
+        };
+        clearTimeout(timeout);
+        timeout = setTimeout(later, wait);
+      };
+    }
+
+    // Optimize weather updates
+    const updateWeather = debounce(async function() {
+      try {
+        const response = await fetch('/api/weather');
+        const data = await response.json();
+        updateWeatherUI(data);
+      } catch (error) {
+        console.error('Fout bij ophalen weerdata:', error);
+      }
+    }, 1000);
+
+    // Optimize hadith updates
+    const updateHadith = debounce(async function() {
+      try {
+        const response = await fetch('/api/hadith');
+        const data = await response.json();
+        updateHadithUI(data);
+      } catch (error) {
+        console.error('Fout bij ophalen hadith:', error);
+      }
+    }, 1000);
+
+    // Initialize on load
+    window.addEventListener('load', function() {
       updateCurrentTime();
       setInterval(updateCurrentTime, 60000);
       setupThemeToggle();
@@ -188,44 +239,35 @@
       
       // Update weerdata elke 10 minuten
       updateWeather();
-      setInterval(updateWeather, 600000); // 10 minuten
+      setInterval(updateWeather, 600000);
       
-      // Update hadith elke X seconden (instelbaar)
+      // Update hadith elke X seconden
       updateHadith();
       setInterval(updateHadith, hadithInterval);
-    };
 
-    // Functie om weerdata bij te werken
-    function updateWeather() {
-      fetch('/api/weather')
-        .then(response => response.json())
-        .then(data => {
-          document.querySelector('.weather-section-left .weather-temp').textContent = data.temperature + '°C';
-          document.querySelector('.weather-section-left .weather-desc').textContent = data.description;
-          document.querySelector('.weather-section-left .weather-detail:nth-child(1)').textContent = `Voelt als ${data.feels_like}°C`;
-          document.querySelector('.weather-section-left .weather-detail:nth-child(2)').textContent = `Vochtigheid ${data.humidity}%`;
-          document.querySelector('.weather-section-left .weather-detail:nth-child(3)').textContent = `Wind ${data.wind_speed} km/h`;
-        })
-        .catch(error => {
-          console.log('Fout bij bijwerken weerdata:', error);
-        });
+      // Setup event listeners
+      setupEventListeners();
+    });
+
+    // Setup event listeners
+    function setupEventListeners() {
+      if (muteBtn) {
+        muteBtn.addEventListener('click', toggleMute);
+      }
     }
 
-    // Functie om hadith bij te werken
-    function updateHadith() {
-      fetch('/api/hadith')
-        .then(response => response.json())
-        .then(data => {
-          const hadithTextElement = document.querySelector('.hadith-center blockquote');
-          
-          if (hadithTextElement) {
-            // Update de tekst en bron
-            hadithTextElement.innerHTML = `"${data.text}"<footer>— ${data.bron}</footer>`;
-          }
-        })
-        .catch(error => {
-          console.log('Fout bij bijwerken hadith:', error);
-        });
+    // Toggle mute state
+    function toggleMute() {
+      const isMuted = adhanAudio.muted;
+      adhanAudio.muted = !isMuted;
+      muteIcon.textContent = isMuted ? 'volume_off' : 'volume_up';
+      
+      // Update mute state in settings
+      fetch('/api/mute', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({ mute: !isMuted })
+      }).catch(error => console.error('Fout bij updaten mute state:', error));
     }
 
     // Theme toggle icon dynamisch aanpassen
@@ -241,25 +283,6 @@
     updateThemeIcon();
     document.getElementById('themeToggle').addEventListener('click', updateThemeIcon);
 
-    // Mute functionaliteit
-    let muteStatus = false;
-    function setMuteIcon() {
-      const icon = document.getElementById('muteIcon');
-      icon.textContent = muteStatus ? 'volume_off' : 'volume_up';
-    }
-    function toggleMute(e) {
-      e.preventDefault();
-      muteStatus = !muteStatus;
-      setMuteIcon();
-      fetch('/api/mute', {
-        method: 'POST',
-        headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify({ mute: muteStatus })
-      });
-    }
-    document.getElementById('muteBtn').addEventListener('click', toggleMute);
-    setMuteIcon();
-
     // Adzkaar Modal Functionaliteit
     let countdownSeconds = 5 * 60; // 5 minuten standaard
     let countdownInterval;
@@ -375,5 +398,6 @@
     window.nextDhikr = nextDhikr;
     window.previousDhikr = previousDhikr;
   </script>
+  <script src="/static/countdown.js"></script>
 </body>
 </html>
diff --git a/done b/done
index 18da2b4..5996268 100644
--- a/done
+++ b/done
@@ -77,4 +77,4 @@ Wed May 28 14:02:31 CEST 2025: Debug tijd synchronisatie toegevoegd tussen debug
 2025-05-29 16:54:45 - Hardcore boot optimalisaties toegevoegd: CPU overclock, SD overclock, meer services disabled, fastboot parameter, RAM optimalisaties voor sub-60sec boot
 2025-05-29 17:03:53 - Chrome translate banner uitgeschakeld: --disable-translate, --disable-features=Translate, --lang=nl flags toegevoegd aan beide setup scripts
 2025-05-29 17:07:38 - Browser gewijzigd van Chromium naar Puffin: 4x sneller, 80MB minder RAM, cloud rendering voor betere Pi3 prestaties
-2025-05-29 17:28:00 - Terug naar Chromium: Puffin werkte niet goed op Pi3
\ No newline at end of file
+2025-05-29 17:28:00 - Terug naar Chromium: Puffin werkte niet goed op Pi32025-05-29 21:32:16 - Geoptimaliseerde index.html en adzkaar.html voor betere performance