Revert "cursor ai garbage tuning"

This reverts commit b88f0b7151.

screendump/FrameUpdater.m

@@ -1,6 +1,4 @@
 #import "FrameUpdater.h"
-#import <CoreGraphics/CoreGraphics.h>
-#import <QuartzCore/QuartzCore.h>
 
 @implementation FrameUpdater {
 	
@@ -9,7 +7,6 @@
 	BOOL _updatingFrames;
 	uint32_t _lastUpdatedSeed;
 	NSTimer* _updateFrameTimer;
-	CADisplayLink *_displayLink;
 
 	// Shared from ScreenDumpVNC
 	IOSurfaceRef _screenSurface;
@@ -39,47 +36,39 @@
 
 
 -(void)_updateFrame {
-	[_q addOperationWithBlock: ^{
 	if (!_updatingFrames) {
 		[self stopFrameLoop];
 		return;
 	}
-		// Check if screen changed
+
+	// check if screen changed
 	uint32_t currentFrameSeed = IOSurfaceGetSeed(_screenSurface);
 	
-		// Only proceed if the screen has changed and the VNC is active
 	if (_lastUpdatedSeed != currentFrameSeed && rfbIsActive(_rfbScreenInfo)) {
 		_lastUpdatedSeed = currentFrameSeed;
-			
-			// Optimize the transfer by checking if the accelerator is available
-			if (_accelerator) {
+		[_q addOperationWithBlock: ^{
 			IOSurfaceAcceleratorTransferSurface(_accelerator, _screenSurface, _staticBuffer, NULL, NULL, NULL, NULL);
-			}
-			
-			// Mark the entire screen as modified only if necessary
-			if (_width > 0 && _height > 0) {
 			rfbMarkRectAsModified(_rfbScreenInfo, 0, 0, _width, _height);
-			}
-		}
 		}];
 	}
-
--(void)startFrameLoop {
-    [self stopFrameLoop];
-    _updatingFrames = YES;
-    
-    dispatch_async(dispatch_get_main_queue(), ^(void){
-        _displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(_updateFrame)];
-        [_displayLink addToRunLoop:[NSRunLoop mainRunLoop] forMode:NSDefaultRunLoopMode];
-    });
 }
 
 -(void)stopFrameLoop {
-    if (_displayLink) {
-        [_displayLink invalidate];
-        _displayLink = nil;
-    }
+	if (_updateFrameTimer == nil || ![_updateFrameTimer isValid]) return;
+
+	dispatch_async(dispatch_get_main_queue(), ^(void){
+		[_updateFrameTimer invalidate];
 		_updatingFrames = NO;
+	});
+}
+
+-(void)startFrameLoop {
+	// if (size_image == 0) VNCSetup();
+	[self stopFrameLoop];
+	_updatingFrames = YES;
+	dispatch_async(dispatch_get_main_queue(), ^(void){
+		_updateFrameTimer = [NSTimer scheduledTimerWithTimeInterval:1/400 target:self selector:@selector(_updateFrame) userInfo:nil repeats:YES];
+	});
 }
 
 -(void)dealloc {