When I use a brush or any of the clone\healing tools the brush start lagging when I do you short and quick strokes.
Longer and continuous strokes don't have any lagging going on.
I have reinstalled the driver and tried a few different versions as well but the issue persists. I also tried different settings for the Graphics Processor in preferences but no change.
I am on an Intuos5 L and before that I had the Intuos 3 A4 and I had the problems with that tablet as well.
I am on i5 iMac Quad-Core 2.5ghz, 32gb ram Radeon HD 6750M 512 MB - Mac OS X 10.7.5
After a few testing I realized this lagging appears to happen only when I am on Dual monitor setup.
My main monitor is an Eizo CG222W I have Photoshop setup whereby all my tools and panels are on my iMac and the main window with the image is on my Eizo.
When I only use my Eizo with tools and panels then the lagging disappears.
After some testing it seems that the Histogram Panel is causing the delay of the Brushes and it doesn't matter if in dual or Single monitor mode
As soon as I close the Histogram Panle the lagging disappears
I did some more testing:
I disconnected the tablet and used the mouse only and same behaviour. The brush strokes start lagging / delaying with the Histogram panle open and it reduces once the panel is closed.
Is anyone else experiencing this to??
Is there a chance you're getting beyond your RAM allocation and each brush stroke is causing data to have to be swapped to the scratch file? Are you seeing disk activity that could confirm this? What are your RAM limit and History States preference settings?
Doesn't seem like you should be able to get ahead of a healthy system like that, though.
In Photoshop I set 75% (23Gb) of RAM to be used by photoshop. The History states is set to 20.
When looking at the activity monitor everything seems ok and Efficiency is always at 100%.
The lagging starts when the brush size is 300 or bigger and with the Histograms Panel open
Is it possible you're just overrunning your computer? If you slow down does it catch up?
Exactly what brush? How big an image? Bit depth?
I can see some lag with larger brushes. I don't sense a difference due to the Histogram panel being open.
I guess I was thinking that if the Histogram Panel requires more processing so as to fill it out, then you could expect its display to take more computer time.
For what it's worth, I did some testing and with a sufficiently large brush I can certainly get ahead of Photoshop - that's pretty well known. I couldn't see for myself where having the Histogram Panel open made any difference, though.