diff --git a/services/audioflinger/Tracks.cpp b/services/audioflinger/Tracks.cpp
index eec01ec..fb43a6e 100644
--- a/services/audioflinger/Tracks.cpp
+++ b/services/audioflinger/Tracks.cpp
@@ -638,7 +638,6 @@
     mOpPlayAudioMonitor(OpPlayAudioMonitor::createIfNeeded(
             uid, attr, id(), streamType, opPackageName)),
     // mSinkTimestamp
-    mFrameCountToBeReady(frameCountToBeReady),
     mFastIndex(-1),
     mCachedVolume(1.0),
     /* The track might not play immediately after being active, similarly as if its volume was 0.
@@ -672,6 +671,7 @@
                 mFrameSize, sampleRate);
     }
     mServerProxy = mAudioTrackServerProxy;
+    mServerProxy->setStartThresholdInFrames(frameCountToBeReady); // update the Cblk value
 
     // only allocate a fast track index if we were able to allocate a normal track name
     if (flags & AUDIO_OUTPUT_FLAG_FAST) {
@@ -999,7 +999,10 @@
     }
 
     size_t bufferSizeInFrames = mServerProxy->getBufferSizeInFrames();
-    size_t framesToBeReady = std::min(mFrameCountToBeReady, bufferSizeInFrames);
+    // Note: mServerProxy->getStartThresholdInFrames() is clamped.
+    const size_t startThresholdInFrames = mServerProxy->getStartThresholdInFrames();
+    const size_t framesToBeReady = std::clamp(  // clamp again to validate client values.
+            std::min(startThresholdInFrames, bufferSizeInFrames), size_t(1), mFrameCount);
 
     if (framesReady() >= framesToBeReady || (mCblk->mFlags & CBLK_FORCEREADY)) {
         ALOGV("%s(%d): consider track ready with %zu/%zu, target was %zu)",