I noticed PH CS6 layer dragging is very laggy, and not smooth at all. For example, in a 2048x872 file dragging layers around in Photoline is smooth. The same document in Photoshop is quite laggy and it is quite distracting. In Photoline the frame update seems about 10 times smoother.
Photoline, of course, does not use Opengl. Turning off opengl (gpu hardware accelleration) for Photoshop improves the performance a lot, but full image layers at that resolution still do not reach the performance of Photoline's smooth dragging, and while I am dragging a full image layer I get a lot of image tearing in Photoshop (with gpu turned off in performance). Not great.
The same for brush engine performance: the drawing is very laggy. In Photoline and Krita painting is smooth and not laggy at all. Even with a tiny brush with spacing at over 50% it is STILL slow to work with in Photoshop.
Has anyone else noticed this? Is there a specific AMD setting to improve Photoshop's Opengl performance? Turning off gpu acceleration is not an option. I'd say my system should be able to run Photoshop smoothly. All the other apps do! Krita's Opengl viewport on Windows is butter smooth when panning or rotating the canvas. There is just no comparison, really: Photoshop's canvas panning and rotating lags.
So I would have to conclude there is something borked in Photoshop's Opengl implementation?
System specs:
System: Win7 64bit - i7 920@3.6Ghz, p6t Deluxe v1, 48gb (6x8gb RipjawsX), ATI 7970 3gb (drives all screens), Revodrive X2 240gb (SSD raid PCI card with 1.3gb/s disk performance), Nvidia 590 (only used for CUDA, not connected to any display), 2XSamsung SA850 (2560*1440) and 1XHP2408H 1920*1200 portrait
(Although I have switched to other software for my work, sometimes I have to open legacy client files in Photoshop CS6, and its laggy performance is somewhat painful to watch and use.)
Similar thread, but with no solution:
http://forums.adobe.com/thread/1010775?start=40&tstart=0
{edit} Yes, I did reset the prefs.
