diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/CallVideoPanel.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/CallVideoPanel.kt
index e611d489..2475732a 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/CallVideoPanel.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/ui/screens/CallVideoPanel.kt
@@ -268,7 +268,8 @@ private class CallVideoTexture(context: Context, private val video: CallVideoEng
         val now = System.nanoTime(); commits++
         if (updateAt != 0L) { commitMaxUs = maxOf(commitMaxUs, (now - updateAt) / 1000); updateAt = 0 }
         // Если timestamp ещё старый, новое TextureView update само назначит draw/commit.
-        video.presented(surface, texture.timestamp / 1000)
+        val matched = video.presented(surface, texture.timestamp / 1000)
+        if (!matched && (Build.VERSION.SDK_INT < 29 || !isHardwareAccelerated)) postOnAnimation { consumed(texture, surface) }
         if (reportAt == 0L) reportAt = now
         if (now - reportAt >= 1_000_000_000) {
             LogManager.addLog("DEBUG", "call", "video surface intervalMs=${(now - reportAt) / 1_000_000} " +
diff --git a/tools/chatgui-android/audio-probe/src/main/java/com/utun/audioprobe/VideoSurfaceProbeActivity.java b/tools/chatgui-android/audio-probe/src/main/java/com/utun/audioprobe/VideoSurfaceProbeActivity.java
index 7100dee5..13dcbcc9 100644
--- a/tools/chatgui-android/audio-probe/src/main/java/com/utun/audioprobe/VideoSurfaceProbeActivity.java
+++ b/tools/chatgui-android/audio-probe/src/main/java/com/utun/audioprobe/VideoSurfaceProbeActivity.java
@@ -38,7 +38,7 @@ public final class VideoSurfaceProbeActivity extends Activity implements Texture
     private volatile boolean cancelled;
     private volatile long expectedPts = -1, submittedAt;
     private final AtomicInteger submitted = new AtomicInteger();
-    private int acknowledged, updates, mismatches, lastReported;
+    private int acknowledged, updates, staleChecks, lastReported;
     private int fps;
     private boolean legacy;
     private long started, ackMaxUs;
@@ -50,10 +50,11 @@ public final class VideoSurfaceProbeActivity extends Activity implements Texture
         getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
         producer.start(); render = new Handler(producer.getLooper());
         view = new TextureView(this); view.setSurfaceTextureListener(this); setContentView(view);
-        Log.i(TAG, "start legacy=" + legacy + " fps=" + fps + " hardware=" + getWindow().getAttributes().flags);
+        Log.i(TAG, "start legacy=" + legacy + " fps=" + fps);
     }
 
     @Override public void onSurfaceTextureAvailable(SurfaceTexture next, int width, int height) {
+        Log.i(TAG, "surface available hardware=" + view.isHardwareAccelerated() + " view=" + width + "x" + height);
         texture = next; next.setDefaultBufferSize(640, 360); surface = new Surface(next);
         observer = view.getViewTreeObserver(); observer.addOnPreDrawListener(this);
         render.post(() -> {
@@ -89,7 +90,12 @@ public final class VideoSurfaceProbeActivity extends Activity implements Texture
     private void committed() {
         if (cancelled || texture == null || expectedPts < 0) return;
         long pts = texture.getTimestamp() / 1000;
-        if (pts != expectedPts) { mismatches++; Log.w(TAG, "timestamp actual=" + pts + " expected=" + expectedPts); return; }
+        // Посторонний UI draw может завершиться до прихода следующего буфера. Это не ACK:
+        // ожидаем TextureView update, который сам создаст следующий draw/commit.
+        if (pts != expectedPts) {
+            if (++staleChecks == 1) Log.d(TAG, "defer ACK timestamp=" + pts + " expected=" + expectedPts);
+            return;
+        }
         expectedPts = -1; acknowledged++;
         ackMaxUs = Math.max(ackMaxUs, (System.nanoTime() - submittedAt) / 1000);
         long next = started + submitted.get() * 1_000_000_000L / fps;
@@ -125,14 +131,19 @@ public final class VideoSurfaceProbeActivity extends Activity implements Texture
             + " advanced=" + (acknowledged - lastReported) + " updates=" + updates + " ackMaxUs=" + ackMaxUs);
         lastReported = acknowledged;
         if (elapsed >= 8_000_000_000L) {
-            boolean valid = legacy ? acknowledged < 30 : acknowledged >= fps * 8 * 0.8 && mismatches == 0;
+            boolean valid = legacy ? acknowledged < 30 : acknowledged >= fps * 8 * 0.8
+                && acknowledged <= submitted.get() && submitted.get() - acknowledged <= 1;
             Log.i(TAG, "RESULT " + (valid ? "PASS" : "FAIL") + " legacy=" + legacy + " targetFps=" + fps + " submitted=" + submitted.get()
-                + " acknowledged=" + acknowledged + " updates=" + updates + " mismatches=" + mismatches + " ackMaxUs=" + ackMaxUs);
+                + " acknowledged=" + acknowledged + " updates=" + updates + " staleChecks=" + staleChecks + " ackMaxUs=" + ackMaxUs);
             finish(); return;
         }
         view.invalidate(); main.postDelayed(this::tick, 500);
     }
-    @Override protected void onStop() { cancelled = true; super.onStop(); }
+    @Override protected void onStop() {
+        cancelled = true;
+        if (texture == null) { Log.i(TAG, "stopped before surface became available"); producer.quitSafely(); }
+        super.onStop();
+    }
     private static void check(boolean condition, String stage) {
         if (!condition) throw new IllegalStateException(stage + " EGL error=" + EGL14.eglGetError());
     }