Photoshop CS6 Brush Lag

i've tried several fixes including disabling cl, changing cache settings, , reducing drawing mode adavanced basic. nothing working.

 

these specs..

 

adobe photoshop version: 13.0 (13.0 20120315.r.428 2012/03/15:21:00:00) x64

operating system: windows 7 64-bit

version: 6.1

system architecture: amd cpu family:15, model:10, stepping:0 mmx, sse integer, sse fp, sse2, sse3

physical processor count: 6

processor speed: 2693 mhz

built-in memory: 6143 mb

free memory: 4351 mb

memory available photoshop: 5374 mb

memory used photoshop: 83 %

image tile size: 132k

image cache levels: 4

opengl drawing: enabled.

opengl drawing mode: basic

opengl allow normal mode: true.

opengl allow advanced mode: true.

opengl allow old gpus: not detected.

video card vendor: ati technologies inc.

video card renderer: ati radeon hd 5800 series

display: 1

display bounds:=  top: 0, left: 0, bottom: 1050, right: 1680

video card number: 1

video card: ati radeon hd 5800 series

opencl version:

driver version: 8.980.0.0

driver date: 20120611000000.000000-000

video card driver: aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.d ll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll

video mode: 1680 x 1050 x 4294967296 colors

video card caption: ati radeon hd 5800 series

video card memory: 1024 mb

video rect texture size: 16384

photoshop scratch has async i/o enabled

scratch volume(s):

  c:\, 919.2g, 807.9g free

 

another option suggested disabled gl advanced interface did not have open gl option visible in same location guide.

 

i did not have brush lag until started using air brush. did increase canvas size , make file larger lag did not happen until after switched brush types. possible did not notice lag until switched.

how big canvas (in pixels horizontally x vertically)?

 

what mode , data depth (e.g., rgb, cmyk, grayscale; 8 bits/channel, 16 bits, etc.)?

 

how big brush in pixels?

 

what brush selected?

 

you mentioned airbrush option enabled.  other settings? 

 

ideally, screenshot showing whole desktop environment when you're brushing helpful.

 

can quantify lag?  in, "i click in upper-left corner of image, shift-click in lower-right corner, , takes brush x.y seconds stroke across image."  accurate can; 0.5 second lag way different 5 second lag.

 

be aware large brushes have manipulate huge number of pixels , can slow things down.

 

-noel

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