diff --git a/media/utils/SchedulingPolicyService.cpp b/media/utils/SchedulingPolicyService.cpp
index ad38862..6e515ff 100644
--- a/media/utils/SchedulingPolicyService.cpp
+++ b/media/utils/SchedulingPolicyService.cpp
@@ -18,6 +18,7 @@
 //#define LOG_NDEBUG 0
 
 #include <binder/IServiceManager.h>
+#include <cutils/properties.h>
 #include <utils/Mutex.h>
 #include "ISchedulingPolicyService.h"
 #include "mediautils/SchedulingPolicyService.h"
@@ -86,4 +87,25 @@
     return ret;
 }
 
+int requestSpatializerPriority(pid_t pid, pid_t tid) {
+    if (pid == -1 || tid == -1) return BAD_VALUE;
+
+    // update priority to RT if specified.
+    constexpr int32_t kRTPriorityMin = 1;
+    constexpr int32_t kRTPriorityMax = 3;
+    const int32_t priorityBoost =
+            property_get_int32("audio.spatializer.priority", kRTPriorityMin);
+    if (priorityBoost >= kRTPriorityMin && priorityBoost <= kRTPriorityMax) {
+        const status_t status = requestPriority(
+                pid, tid, priorityBoost, false /* isForApp */, true /*asynchronous*/);
+        if (status != OK) {
+            ALOGW("%s: Cannot request spatializer priority boost %d, status:%d",
+                    __func__, priorityBoost, status);
+            return status < 0 ? status : UNKNOWN_ERROR;
+        }
+        return priorityBoost;
+    }
+    return 0;  // no boost requested
+}
+
 }   // namespace android
diff --git a/media/utils/include/mediautils/SchedulingPolicyService.h b/media/utils/include/mediautils/SchedulingPolicyService.h
index 546cec5..af1fcd2 100644
--- a/media/utils/include/mediautils/SchedulingPolicyService.h
+++ b/media/utils/include/mediautils/SchedulingPolicyService.h
@@ -23,7 +23,7 @@
 
 class IBinder;
 // Request elevated priority for thread tid, whose thread group leader must be pid.
-// The priority parameter is currently restricted to either 1 or 2.
+// The priority parameter is currently restricted from 1 to 3.
 // The asynchronous parameter should be 'true' to return immediately,
 // after the request is enqueued but not necessarily executed.
 // The default value 'false' means to return after request has been enqueued and executed.
@@ -37,6 +37,12 @@
 // 'client' is ignored in this case.
 int requestCpusetBoost(bool enable, const sp<IBinder> &client);
 
+// Audio: Request Spatializer RT priority for thread tid, whose thread group leader must be pid.
+// returns positive value if successful, the RT priority used
+//         zero, if no RT priority selected
+//         negative status code if RT priority unable to be set.
+int requestSpatializerPriority(pid_t pid, pid_t tid);
+
 }   // namespace android
 
 #endif  // _ANDROID_SCHEDULING_POLICY_SERVICE_H
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 7731339..73ee691 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -7332,23 +7332,13 @@
         updateHalSupportedLatencyModes_l();
     }
 
-    // update priority if specified.
-    constexpr int32_t kRTPriorityMin = 1;
-    constexpr int32_t kRTPriorityMax = 3;
-    const int32_t priorityBoost =
-            property_get_int32("audio.spatializer.priority", kRTPriorityMin);
-    if (priorityBoost >= kRTPriorityMin && priorityBoost <= kRTPriorityMax) {
-        const pid_t pid = getpid();
-        const pid_t tid = getTid();
-
-        if (tid == -1) {
-            // Unusual: PlaybackThread::onFirstRef() should set the threadLoop running.
-            ALOGW("%s: audio.spatializer.priority %d ignored, thread not running",
-                    __func__, priorityBoost);
-        } else {
-            ALOGD("%s: audio.spatializer.priority %d, allowing real time for pid %d  tid %d",
-                    __func__, priorityBoost, pid, tid);
-            sendPrioConfigEvent_l(pid, tid, priorityBoost, false /*forApp*/);
+    const pid_t tid = getTid();
+    if (tid == -1) {
+        // Unusual: PlaybackThread::onFirstRef() should set the threadLoop running.
+        ALOGW("%s: Cannot update Spatializer mixer thread priority, not running", __func__);
+    } else {
+        const int priorityBoost = requestSpatializerPriority(getpid(), tid);
+        if (priorityBoost > 0) {
             stream()->setHalThreadPriority(priorityBoost);
         }
     }
diff --git a/services/audiopolicy/service/Spatializer.cpp b/services/audiopolicy/service/Spatializer.cpp
index 3dc4490..2fe7b9e 100644
--- a/services/audiopolicy/service/Spatializer.cpp
+++ b/services/audiopolicy/service/Spatializer.cpp
@@ -34,6 +34,7 @@
 #include <media/stagefright/foundation/AMessage.h>
 #include <media/MediaMetricsItem.h>
 #include <media/ShmemCompat.h>
+#include <mediautils/SchedulingPolicyService.h>
 #include <mediautils/ServiceUtilities.h>
 #include <utils/Thread.h>
 
@@ -111,6 +112,14 @@
     };
 
     void onMessageReceived(const sp<AMessage> &msg) override {
+        // No ALooper method to get the tid so update
+        // Spatializer priority on the first message received.
+        std::call_once(mPrioritySetFlag, [](){
+            const pid_t pid = getpid();
+            const pid_t tid = gettid();
+            (void)requestSpatializerPriority(pid, tid);
+        });
+
         sp<Spatializer> spatializer = mSpatializer.promote();
         if (spatializer == nullptr) {
             ALOGW("%s: Cannot promote spatializer", __func__);
@@ -163,6 +172,7 @@
     }
 private:
     wp<Spatializer> mSpatializer;
+    std::once_flag mPrioritySetFlag;
 };
 
 const std::vector<const char *> Spatializer::sHeadPoseKeys = {