diff --git a/Source/WebCore/html/HTMLMediaElement.cpp b/Source/WebCore/html/HTMLMediaElement.cpp
index 7a0e66aa6e9b4..b45fa6d134784 100644
--- a/Source/WebCore/html/HTMLMediaElement.cpp
+++ b/Source/WebCore/html/HTMLMediaElement.cpp
@@ -4164,7 +4164,7 @@ void HTMLMediaElement::scanTimerFired()
 
 // The spec says to fire periodic timeupdate events (those sent while playing) every
 // "15 to 250ms", we choose the slowest frequency
-static const Seconds maxTimeupdateEventFrequency { 250_ms };
+static const Seconds maxTimeupdateEventFrequency { 200_ms };
 
 void HTMLMediaElement::startPlaybackProgressTimer()
 {
@@ -4211,8 +4211,8 @@ void HTMLMediaElement::scheduleTimeupdateEvent(bool periodicEvent)
     MonotonicTime now = MonotonicTime::now();
     Seconds timedelta = now - m_clockTimeAtLastUpdateEvent;
 
-    // throttle the periodic events
-    if (periodicEvent && timedelta < maxTimeupdateEventFrequency)
+    // Throttle the periodic events, but leave some room for timers that run slightly faster than expected.
+    if (periodicEvent && timedelta < (maxTimeupdateEventFrequency - 50_ms))
         return;
 
     // Some media engines make multiple "time changed" callbacks at the same time, but we only want one
diff --git a/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp b/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp
index 1bb518f0a228d..b478f93e6429e 100644
--- a/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp
+++ b/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp
@@ -565,6 +565,20 @@ void MediaPlayerPrivateGStreamer::updatePlaybackRate()
     GST_INFO_OBJECT(pipeline(), mute ? "Need to mute audio" : "Do not need to mute audio");
 
     if (m_lastPlaybackRate != m_playbackRate) {
+#if ENABLE(INSTANT_RATE_CHANGE)
+        bool didInstantRateChange = false;
+        if (!paused()) {
+            GstStructure* s = gst_structure_new("custom-instant-rate-change",
+                "rate", G_TYPE_DOUBLE, m_playbackRate, nullptr);
+            didInstantRateChange = gst_element_send_event(
+                pipeline(), gst_event_new_custom(GST_EVENT_CUSTOM_DOWNSTREAM_OOB, s));
+        }
+        if (didInstantRateChange) {
+            g_object_set(m_pipeline.get(), "mute", mute, nullptr);
+            m_lastPlaybackRate = m_playbackRate;
+        }
+        else
+#endif
         if (doSeek(playbackPosition(), m_playbackRate, static_cast<GstSeekFlags>(GST_SEEK_FLAG_FLUSH))) {
             g_object_set(m_pipeline.get(), "mute", mute, nullptr);
             m_lastPlaybackRate = m_playbackRate;
diff --git a/Source/WebCore/platform/graphics/gstreamer/mse/WebKitMediaSourceGStreamer.cpp b/Source/WebCore/platform/graphics/gstreamer/mse/WebKitMediaSourceGStreamer.cpp
index 4170799b415c7..23c37e1503d38 100644
--- a/Source/WebCore/platform/graphics/gstreamer/mse/WebKitMediaSourceGStreamer.cpp
+++ b/Source/WebCore/platform/graphics/gstreamer/mse/WebKitMediaSourceGStreamer.cpp
@@ -820,7 +820,8 @@ static void webKitMediaSrcStreamFlush(Stream* stream, bool isSeekingFlush, GstCl
                     GST_DEBUG_OBJECT(stream->source, "Resetting segment to current pipeline running time (%" GST_TIME_FORMAT " and stream time (%" GST_TIME_FORMAT " = %s)",
                         GST_TIME_ARGS(pipelineRunningTime), GST_TIME_ARGS(pipelineStreamTime), streamTime.toString().ascii().data());
                     streamingMembers->segment.base = pipelineRunningTime;
-                    streamingMembers->segment.start = streamingMembers->segment.time = static_cast<GstClockTime>(pipelineStreamTime);
+                    streamingMembers->segment.rate = stream->source->priv->rate;
+                    streamingMembers->segment.position = streamingMembers->segment.start = streamingMembers->segment.time = static_cast<GstClockTime>(pipelineStreamTime);
                 }
             }
         }
@@ -952,6 +953,19 @@ static gboolean webKitMediaSrcSendEvent(GstElement* element, GstEvent* event)
         webKitMediaSrcSeek(WEBKIT_MEDIA_SRC(element), start, rate);
         return true;
     }
+    case GST_EVENT_CUSTOM_DOWNSTREAM_OOB: {
+        WebKitMediaSrc* source = WEBKIT_MEDIA_SRC(element);
+        gboolean result = !source->priv->streams.isEmpty();
+        for (const RefPtr<Stream>& stream : source->priv->streams.values())
+            result &= gst_pad_push_event(stream->pad.get(), gst_event_ref(event));
+        if (gst_event_has_name(event, "custom-instant-rate-change")) {
+            gdouble rate = 1.0;
+            if (gst_structure_get_double(gst_event_get_structure(event), "rate", &rate))
+                source->priv->rate = rate;
+        }
+        gst_event_unref(event);
+        return result;
+    }
     default:
         return GST_ELEMENT_CLASS(webkit_media_src_parent_class)->send_event(element, event);
     }
diff --git a/Source/cmake/OptionsWPE.cmake b/Source/cmake/OptionsWPE.cmake
index a81bfdadd05bd..aa00de257a2a8 100644
--- a/Source/cmake/OptionsWPE.cmake
+++ b/Source/cmake/OptionsWPE.cmake
@@ -107,6 +107,7 @@ WEBKIT_OPTION_DEFINE(USE_GSTREAMER_HOLEPUNCH "Whether to enable GStreamer holepu
 WEBKIT_OPTION_DEFINE(USE_EXTERNAL_HOLEPUNCH "Whether to enable external holepunch" PRIVATE OFF)
 WEBKIT_OPTION_DEFINE(ENABLE_ACCELERATED_2D_CANVAS "Whether to enable accelerated 2D canvas" PRIVATE OFF)
 WEBKIT_OPTION_DEFINE(ENABLE_OIPF_VK "Whether to enable OIPF keys for DAE applications" PRIVATE OFF)
+WEBKIT_OPTION_DEFINE(ENABLE_INSTANT_RATE_CHANGE "Whether to enable instant rate change" PRIVATE OFF)
 
 # Supported platforms.
 WEBKIT_OPTION_DEFINE(USE_WPEWEBKIT_PLATFORM_WESTEROS "Whether to enable support for the Westeros platform" PUBLIC OFF)