Limit the flip delay in the other direction to try to work around #10763

.

Core/CoreTiming.cpp

@@ -585,6 +585,7 @@ void Advance()
 	int cyclesExecuted = slicelength - currentMIPS->downcount;
 	globalTimer += cyclesExecuted;
 	currentMIPS->downcount = slicelength;
+	VERBOSE_LOG(SCEDISPLAY, "CoreTiming: Event type '%s'", event_types[first->type].name);
 
 	if (Common::AtomicLoadAcquire(hasTsEvents))
 		MoveEvents();

Core/HLE/sceDisplay.cpp

@@ -588,6 +588,7 @@ static void DoFrameTiming(bool &throttle, bool &skipFrame, float timestep) {
 
 static void DoFrameIdleTiming() {
 	PROFILE_THIS_SCOPE("timing");
+
 	if (!FrameTimingThrottled() || !g_Config.bEnableSound || wasPaused) {
 		return;
 	}
@@ -713,6 +714,7 @@ void __DisplayFlip(int cyclesLate) {
 			// Check first though, might've just quit / been paused.
 			if (coreState == CORE_RUNNING) {
 				coreState = CORE_NEXTFRAME;
+				DEBUG_LOG(SCEDISPLAY, "No recent flip - displaying anyway.");
 				gpu->CopyDisplayToOutput();
 				if (fbReallyDirty) {
 					actualFlips++;
@@ -910,6 +912,8 @@ u32 sceDisplaySetFramebuf(u32 topaddr, int linesize, int pixelformat, int sync)
 		// sceDisplaySetFramebuf() isn't supposed to delay threads at all.  This is a hack.
 		// So let's only delay when it's more than 1ms.
 		const s64 FLIP_DELAY_CYCLES_MIN = usToCycles(1000);
+		// Though if we are super early, we also don't want to delay because the game is being silly like in #10763
+		const s64 FLIP_DELAY_CYCLES_MAX = usToCycles(16000);  // This is slightly less than a full frame at 60hz, 16666
 		// Some games (like Final Fantasy 4) only call this too much in spurts.
 		// The goal is to fix games where this would result in a consistent overhead.
 		const int FLIP_DELAY_MIN_FLIPS = 30;
@@ -919,7 +923,7 @@ u32 sceDisplaySetFramebuf(u32 topaddr, int linesize, int pixelformat, int sync)
 
 		u64 now = CoreTiming::GetTicks();
 		s64 cyclesAhead = nextFlipCycles - now;
-		if (cyclesAhead > FLIP_DELAY_CYCLES_MIN) {
+		if (cyclesAhead > FLIP_DELAY_CYCLES_MIN && (cyclesAhead < FLIP_DELAY_CYCLES_MAX || PSP_CoreParameter().unthrottle)) {
 			if (lastFlipsTooFrequent >= FLIP_DELAY_MIN_FLIPS && gpuStats.numClears > 0) {
 				delayCycles = cyclesAhead;
 			} else {