diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index de5aead..49f6bfc 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -3008,6 +3008,7 @@
 
     // Calculate size of normal sink buffer relative to the HAL output buffer size
     double multiplier = 1.0;
+    // Note: mType == SPATIALIZER does not support FastMixer.
     if (mType == MIXER && (kUseFastMixer == FastMixer_Static ||
             kUseFastMixer == FastMixer_Dynamic)) {
         size_t minNormalFrameCount = (kMinNormalSinkBufferSizeMs * mSampleRate) / 1000;
@@ -3469,7 +3470,7 @@
     sp<EffectBufferHalInterface> halInBuffer, halOutBuffer;
     effect_buffer_t *buffer = nullptr; // only used for non global sessions
 
-    if (mType == SPATIALIZER ) {
+    if (mType == SPATIALIZER) {
         if (!audio_is_global_session(session)) {
             // player sessions on a spatializer output will use a dedicated input buffer and
             // will either output multi channel to mEffectBuffer if the track is spatilaized
@@ -3695,7 +3696,7 @@
     cacheParameters_l();
     mSleepTimeUs = mIdleSleepTimeUs;
 
-    if (mType == MIXER) {
+    if (mType == MIXER || mType == SPATIALIZER) {
         sleepTimeShift = 0;
     }
 
@@ -3873,7 +3874,7 @@
 
                     mStandbyTimeNs = systemTime() + mStandbyDelayNs;
                     mSleepTimeUs = mIdleSleepTimeUs;
-                    if (mType == MIXER) {
+                    if (mType == MIXER || mType == SPATIALIZER) {
                         sleepTimeShift = 0;
                     }
 
@@ -4150,7 +4151,8 @@
 
                             // write blocked detection
                             const int64_t deltaWriteNs = lastIoEndNs - lastIoBeginNs;
-                            if (mType == MIXER && deltaWriteNs > maxPeriod) {
+                            if ((mType == MIXER || mType == SPATIALIZER)
+                                    && deltaWriteNs > maxPeriod) {
                                 mNumDelayedWrites++;
                                 if ((lastIoEndNs - lastWarning) > kWarningThrottleNs) {
                                     ATRACE_NAME("underrun");
@@ -4171,7 +4173,7 @@
                         (mMixerStatus == MIXER_DRAIN_ALL)) {
                     threadLoop_drain();
                 }
-                if (mType == MIXER && !mStandby) {
+                if ((mType == MIXER || mType == SPATIALIZER) && !mStandby) {
 
                     if (mThreadThrottle
                             && mMixerStatus == MIXER_TRACKS_READY // we are mixing (active tracks)