Photoshop CS4 slowdown when Lightroom is open...

Question

Hey everyone,
I am using Lightroom (x64) to manage and sort my files and my typical workflow has me editing in Photoshop (CS4 x64) from out of lightroom. I noticed at first that when I tried the new healing brush that it was a lot slower than the CS3 version of the brush. One day I was editing out of Bridge and noticed a significant speed boost while using the brush, it was working like the previous version of the brush. I pointed the finger at Lightroom, so I opened it and tried editing out of LR again. Same slow down. The only thing I can think of is that they are both using openGL and there might a conflict somewhere? LR works fine by itself and PS also work great while LR is closed. And PS works fine as long as it isn't using any of the new openGL (assumption) features, like the healing brush. If anyone else has been experiencing this and has found a solution I am all ears. My system is a Q6600, 8gb ram, ati Radeon 3850, all drivers are up to date.

Answer 1

In terms of RAM usage, I am fine, it's totaling around 6gb when both are running.
In terms of OpenGL, I just assumed it was. I am using LR 2 and thought that was the reason for the speed of the adjustment brush and thumbnail sizing. It seems visually obvious to me when either PS or LR does a redraw using openGL. Please correct me if I'm wrong, as I can't seem to find any documentation.