diff --git a/Core/HLE/sceDisplay.cpp b/Core/HLE/sceDisplay.cpp
index e665d35445..3ebd210469 100644
--- a/Core/HLE/sceDisplay.cpp
+++ b/Core/HLE/sceDisplay.cpp
@@ -149,8 +149,12 @@ void __DisplayVblankEndCallback(SceUID threadID, SceUID prevCallbackId);
 
 void __DisplayFlip(int cyclesLate);
 
+static bool UseLagSync() {
+	return g_Config.bForceLagSync && !g_Config.bAutoFrameSkip;
+}
+
 static void ScheduleLagSync(int over = 0) {
-	lagSyncScheduled = g_Config.bForceLagSync;
+	lagSyncScheduled = UseLagSync();
 	if (lagSyncScheduled) {
 		// Reset over if it became too high, such as after pausing or initial loading.
 		// There's no real sense in it being more than 1/60th of a second.
@@ -239,7 +243,7 @@ void __DisplayDoState(PointerWrap &p) {
 		Do(p, lagSyncScheduled);
 		CoreTiming::RestoreRegisterEvent(lagSyncEvent, "LagSync", &hleLagSync);
 		lastLagSync = time_now_d();
-		if (lagSyncScheduled != g_Config.bForceLagSync) {
+		if (lagSyncScheduled != UseLagSync()) {
 			ScheduleLagSync();
 		}
 	} else {
@@ -652,7 +656,7 @@ void hleAfterFlip(u64 userdata, int cyclesLate) {
 	PPGeNotifyFrame();
 
 	// This seems like as good a time as any to check if the config changed.
-	if (lagSyncScheduled != g_Config.bForceLagSync) {
+	if (lagSyncScheduled != UseLagSync()) {
 		ScheduleLagSync();
 	}
 }
diff --git a/UI/GameSettingsScreen.cpp b/UI/GameSettingsScreen.cpp
index 67c0e31469..038084d5ff 100644
--- a/UI/GameSettingsScreen.cpp
+++ b/UI/GameSettingsScreen.cpp
@@ -988,7 +988,7 @@ void GameSettingsScreen::CreateViews() {
 
 	static const char *ioTimingMethods[] = { "Fast (lag on slow storage)", "Host (bugs, less lag)", "Simulate UMD delays" };
 	View *ioTimingMethod = systemSettings->Add(new PopupMultiChoice(&g_Config.iIOTimingMethod, sy->T("IO timing method"), ioTimingMethods, 0, ARRAY_SIZE(ioTimingMethods), sy->GetName(), screenManager()));
-	systemSettings->Add(new CheckBox(&g_Config.bForceLagSync, sy->T("Force real clock sync (slower, less lag)")));
+	systemSettings->Add(new CheckBox(&g_Config.bForceLagSync, sy->T("Force real clock sync (slower, less lag)")))->SetDisabledPtr(&g_Config.bAutoFrameSkip);
 	PopupSliderChoice *lockedMhz = systemSettings->Add(new PopupSliderChoice(&g_Config.iLockedCPUSpeed, 0, 1000, sy->T("Change CPU Clock", "Change CPU Clock (unstable)"), screenManager(), sy->T("MHz, 0:default")));
 	lockedMhz->OnChange.Add([&](UI::EventParams &) {
 		enableReportsCheckbox_->SetEnabled(Reporting::IsSupported());