Remove the nvidia anti-stutter hack, I could never reproduce any stutter on amd and can now say the same about nvidia gpu's, users suffering from it are likely using some nasty driver/system hacks or third party software doing weird stuff.

Core/Config.cpp

@@ -632,7 +632,6 @@ static ConfigSetting graphicsSettings[] = {
 #if defined(USING_WIN_UI)
 	ConfigSetting("RestartRequired", &g_Config.bRestartRequired, false, false),
 #endif
-	ConfigSetting("RefreshAt60Hz", &g_Config.bRefreshAt60Hz, false, true, true),
 
 	// Most low-performance (and many high performance) mobile GPUs do not support aniso anyway so defaulting to 4 is fine.
 	ConfigSetting("AnisotropyLevel", &g_Config.iAnisotropyLevel, 4, true, true),

Core/Config.h

@@ -186,7 +186,6 @@ public:
 	bool bTexDeposterize;
 	int iFpsLimit1;
 	int iFpsLimit2;
-	bool bRefreshAt60Hz;
 	int iMaxRecent;
 	int iCurrentStateSlot;
 	int iRewindFlipFrequency;

Core/HLE/sceDisplay.cpp

@@ -110,7 +110,7 @@ static bool wasPaused;
 static bool flippedThisFrame;
 
 // 1.001f to compensate for the classic 59.94 NTSC framerate that the PSP seems to have.
-static const double timePerVblank = (g_Config.bRefreshAt60Hz ? 1.0f : 1.001f) / 60.0f;
+static const double timePerVblank = 1.001f / 60.0f;
 
 // Don't include this in the state, time increases regardless of state.
 static double curFrameTime;
@@ -952,7 +952,7 @@ u32 sceDisplaySetFramebuf(u32 topaddr, int linesize, int pixelformat, int sync)
 		}
 
 		// 1001 to account for NTSC timing (59.94 fps.)
-		u64 expected = msToCycles(g_Config.bRefreshAt60Hz ? 1000 : 1001) / 60 - LEEWAY_CYCLES_PER_FLIP;
+		u64 expected = msToCycles(1001) / 60 - LEEWAY_CYCLES_PER_FLIP;
 		lastFlipCycles = now;
 		nextFlipCycles = std::max(lastFlipCycles, nextFlipCycles) + expected;
 	}
@@ -1101,7 +1101,7 @@ static int sceDisplayGetAccumulatedHcount() {
 }
 
 static float sceDisplayGetFramePerSec() {
-	const static float framePerSec = g_Config.bRefreshAt60Hz ? 60.0f : 59.9400599f;
+	const static float framePerSec = 59.9400599f;
 	VERBOSE_LOG(SCEDISPLAY,"%f=sceDisplayGetFramePerSec()", framePerSec);
 	return framePerSec;	// (9MHz * 1)/(525 * 286)
 }

UI/GameSettingsScreen.cpp

@@ -1425,7 +1425,6 @@ void OtherSettingsScreen::CreateViews() {
 	list->Add(new CheckBox(&g_Config.bFrameSkipUnthrottle, gr->T("Frameskip unthrottle(good for CPU benchmark)")));
 	list->Add(new CheckBox(&g_Config.bShowFrameProfiler, gr->T("Display frame profiler(heavy!)")));
 	list->Add(new CheckBox(&g_Config.bSimpleFrameStats, gr->T("Display simple frame stats(heavy!)")));
-	list->Add(new CheckBox(&g_Config.bRefreshAt60Hz, gr->T("Refresh at 60Hz(gamebreaking, but might be needed for NVidia stutter)")));
 	list->Add(new CheckBox(&g_Config.bSavestateScreenshotResLimit, gr->T("Limit resolution of savestates screenshots")));
 	list->Add(new CheckBox(&g_Config.bDiscordPresence, n->T("Send Discord(3rd party software) Presence information")));
 }