Hi Mirek,

I noticed an update in trunk for GTK3 SysDrawImageOp(), but for some reason a fixed value works twice as fast in repeated use.

	//Size sz = Ctrl::GetPrimaryScreenArea().GetSize();
	Size sz(3840,2160); // Twice as fast compared to the above... why?
	cache.Shrink(4 * sz.cx * sz.cy, 1000); // Cache must be after Paint because of PaintOnly!

I just cannot figure out why. I tried even using static Size, with no improvement.

Best regards,

Tom