P: CS6 Slow compared to CS5.1 with large files

I have a standard issue Mac Pro, to be 100% crystal clear, I still have Photoshop CS5 installed and it's still working OK, I only have this problem in Photoshop CS6.

I did have the CS6 beta installed but I uninstalled it before installing the release versions via a subscription - is there some way this may be causing the trouble.

I agree with Laden. Even after turning Layer Thumbnails off, I'm still seeing a noticeably slower performance - and I upgraded from CS4. Opening larger files, moving layer groups and saving the files is all slower and I think it's an issue that goes beyond video card drivers.

Curves should not be related, but you should still try turning off layer thumbnails and see if that solves all the slowness you're seeing.

yes when i move a layer group with few layers inside it is very slow. i can imagine that the curves adjustment redraw issue i'm having is also connected with this.

i can imagine that my system is a bit old, although i am trying to upgrade as much as possible. if a new mac pro arrives some day the things gonna change i hope.

thanks! yes it's understandable that you have to look at many system informations:)

I think I've just looked at too many system info reports today, sorry about that.
(I copy them into a text editor to make them easier to read, and I probably had a dozen open)

On very large documents, CS6 is working faster than CS5 for most people.

The only place we've seen a slowdown is on large documents when moving several layers at once (due to a problem with the layers palette thumbnail drawing).

hi Chris,
i was so happy when Jeffrey said that you are investigating that issue and also when i saw that others are having the same problem.
now i am a little confused regarding your reply.

- first thing is that i am working on a mac and we get our driver updates with the system update. my system is always up to date. there is no other way to get a video card driver update. i am wondering that you didn't now this.

- second thing is that i am working as a professional with photoshop for a long time. it is very easy for me to see the slightest performance drawback, an i already told you that my settings are exactly the same as CS5.

CS6 is very fast and faster than CS5 for users working with regular sized SLR 6000x4000px photos, with probably 20+ layers. or with web design comps with no matter how many layers but very small resolution.

i work with comps sometimes exceeding 12000x10000px and with 100+ layers. whit these files CS6 is definitely slower than CS5. this is my job, not my hobby, i am working with this files every day, so i'll stick to CS5 till there is a fix for it.

thanks!

FIrst we need to figure out what it is about your system that is making it slow. Most people are seeing CS6 as fast, or faster, than CS5.

So what is different about your system?
Video card drivers?
Other software?

OK, what is different about your machine that might slow it down?
Video card drivers?
Utility software?
Other applications?