diff --git a/media/base/media_config.h b/media/base/media_config.h
index 3d0666032c..20bc8fe6cb 100644
--- a/media/base/media_config.h
+++ b/media/base/media_config.h
@@ -48,7 +48,8 @@ struct MediaConfig {
     // Note that even if this flag is set to false, dropping of frames can
     // still happen pre-decode, e.g., dropping of higher temporal layers.
     // This flag comes from the PeerConnection RtcConfiguration.
-    bool enable_prerenderer_smoothing = true;
+    // RingRTC change to disable prerenderer smoothing
+    bool enable_prerenderer_smoothing = false;
 
     // Enables periodic bandwidth probing in application-limited region.
     bool periodic_alr_bandwidth_probing = false;
@@ -58,7 +59,8 @@ struct MediaConfig {
     // Chrome origin-trial.
     // TODO(bugs.webrtc.org/8504): If all goes well, the flag will be removed
     // together with the old method of estimation.
-    bool experiment_cpu_load_estimator = false;
+    // RingRTC change to use the new CPU load estimator
+    bool experiment_cpu_load_estimator = true;
 
     // Time interval between RTCP report for video
     int rtcp_report_interval_ms = 1000;
diff --git a/modules/video_coding/timing/timing.cc b/modules/video_coding/timing/timing.cc
index 735f6328d8..3081821c28 100644
--- a/modules/video_coding/timing/timing.cc
+++ b/modules/video_coding/timing/timing.cc
@@ -51,7 +51,12 @@ VCMTiming::VCMTiming(Clock* clock, const FieldTrialsView& field_trials)
       decode_time_filter_(std::make_unique<DecodeTimePercentileFilter>()),
       render_delay_(kDefaultRenderDelay),
       min_playout_delay_(TimeDelta::Zero()),
-      max_playout_delay_(TimeDelta::Seconds(10)),
+      // RingRTC change to reduce max playout delay
+#if defined(WEBRTC_IOS)
+      max_playout_delay_(TimeDelta::Millis(501)),
+#else
+      max_playout_delay_(TimeDelta::Zero()),
+#endif
       jitter_delay_(TimeDelta::Zero()),
       current_delay_(TimeDelta::Zero()),
       prev_frame_timestamp_(0),