--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -1421,17 +1421,17 @@ pref("privacy.resistFingerprinting", fal
 pref("privacy.resistFingerprinting.autoDeclineNoUserInputCanvasPrompts", true);
 // A subset of Resist Fingerprinting protections focused specifically on timers for testing
 // This affects the Animation API, the performance APIs, Date.getTime, Event.timestamp,
 //   File.lastModified, audioContext.currentTime, canvas.captureStream.currentTime
 pref("privacy.reduceTimerPrecision", true);
 // Dynamically tune the resolution of the timer reduction for both of the two above prefs
 pref("privacy.resistFingerprinting.reduceTimerPrecision.microseconds", 2000);
 // Enable jittering the clock one precision value forward
-pref("privacy.resistFingerprinting.reduceTimerPrecision.jitter", false);
+pref("privacy.resistFingerprinting.reduceTimerPrecision.jitter", true);
 // Lower the priority of network loads for resources on the tracking protection list.
 // Note that this requires the privacy.trackingprotection.annotate_channels pref to be on in order to have any effect.
 #ifdef NIGHTLY_BUILD
 pref("privacy.trackingprotection.lower_network_priority", true);
 #else
 pref("privacy.trackingprotection.lower_network_priority", false);
 #endif
 

--- a/toolkit/components/resistfingerprinting/nsRFPService.cpp
+++ b/toolkit/components/resistfingerprinting/nsRFPService.cpp
@@ -45,17 +45,17 @@ using namespace std;
 static mozilla::LazyLogModule gResistFingerprintingLog("nsResistFingerprinting");
 #endif
 
 #define RESIST_FINGERPRINTING_PREF "privacy.resistFingerprinting"
 #define RFP_TIMER_PREF "privacy.reduceTimerPrecision"
 #define RFP_TIMER_VALUE_PREF "privacy.resistFingerprinting.reduceTimerPrecision.microseconds"
 #define RFP_TIMER_VALUE_DEFAULT 2000
 #define RFP_JITTER_VALUE_PREF "privacy.resistFingerprinting.reduceTimerPrecision.jitter"
-#define RFP_JITTER_VALUE_DEFAULT false
+#define RFP_JITTER_VALUE_DEFAULT true
 #define RFP_SPOOFED_FRAMES_PER_SEC_PREF "privacy.resistFingerprinting.video_frames_per_sec"
 #define RFP_SPOOFED_DROPPED_RATIO_PREF  "privacy.resistFingerprinting.video_dropped_ratio"
 #define RFP_TARGET_VIDEO_RES_PREF "privacy.resistFingerprinting.target_video_res"
 #define RFP_SPOOFED_FRAMES_PER_SEC_DEFAULT 30
 #define RFP_SPOOFED_DROPPED_RATIO_DEFAULT  5
 #define RFP_TARGET_VIDEO_RES_DEFAULT 480
 #define PROFILE_INITIALIZED_TOPIC "profile-initial-state"