media: throttle frame rate of media-related animations

port 1.5

related #2869

quickshell/Widgets/DankAlbumArt.qml

@@ -182,16 +182,12 @@ Item {
         }
     }
 
-    FrameAnimation {
-        running: blobEffect.visible
-        property real pending: 0
-        onTriggered: {
-            pending += frameTime;
-            if (pending < 0.03)
-                return;
-            root.stepBlob(Math.min(pending, 0.05));
-            pending = 0;
-        }
+    // Timer, not FrameAnimation — a running animation commits frames every vsync (#2863)
+    Timer {
+        running: blobEffect.visible && root.onScreen
+        interval: 33
+        repeat: true
+        onTriggered: root.stepBlob(0.033)
     }
 
     ShaderEffect {

quickshell/Widgets/DankSeekbar.qml

@@ -147,6 +147,10 @@ Item {
                 trackColor: MediaAccentService.accentTrack
                 actualProgressColor: MediaAccentService.accentSubtle
                 isPlaying: activePlayer && activePlayer.playbackState === MprisPlaybackState.Playing
+                onFrameTicked: {
+                    if (!root.isSeeking)
+                        activePlayer.positionChanged();
+                }
 
                 MouseArea {
                     id: waveMouseArea

quickshell/Widgets/M3WaveProgress.qml

@@ -50,11 +50,15 @@ Item {
         fragmentShader: Qt.resolvedUrl("../Shaders/qsb/wave_progress.frag.qsb")
     }
 
+    signal frameTicked
+
     FrameAnimation {
-        running: root.visible && (root.isPlaying || root.currentAmp > 0)
+        running: root.visible && (root.isPlaying || root.currentAmp > 0) && (root.Window.window?.visible ?? false)
         onTriggered: {
-            if (root.isPlaying)
-                root.phase += 0.03 * frameTime * 60;
+            if (!root.isPlaying)
+                return;
+            root.phase = (root.phase + 0.03 * frameTime * 60) % 6.28318530718;
+            root.frameTicked();
         }
     }
 }