Improve CS2's Performance If You Have Over 1 GB of RAM
I'm always looking for performance tweaks to help Photoshop run as fast as it can. I thought I'd found them all, but then one day Dave Cross, NAPP's Senior Education and Curriculum Developer (aka Total Photoshop Guru), walked into my office and showed me a really cool trick to make Photoshop CS2 manage memory more efficiently. It really only works if you've got more than 1 GB of RAM, but it works on both a Mac and a PC.
Techie Background Stuff
When you work on your images in Photoshop, it breaks your image into sections called tiles. By default, the maximum size of each tile is 132 KB of RAM. However, in CS2 you can increase this tile size by activating the Bigger Tiles plug-in. This means that Photoshop can process large images faster because it won't have to draw as many tiles (there will be fewer overall tiles, since each one is now larger).
First, you'll need to quit Photoshop. Then locate the ~Bigger Tiles plug-in file. On the Mac, it's in Hard Drive:Applications: Adobe Photoshop CS2:Plug-Ins:Adobe Photoshop Only:Extensions:Bigger Tiles. In Windows, it's in C:\Program Files\Adobe\Adobe Photoshop CS2\Plug-Ins\Adobe Photoshop Only\Extensions\Bigger Tiles.
Rename the file by removing the tilde (~) from the file name. Go ahead and start Photoshop again. Since Photoshop redraws more data at a time because each tile is larger, it will process your images faster. I know it sounds a little odd, but Photoshop takes less time to redraw fewer tiles that are larger than it does more tiles that are smaller. Don't ask me why, though, I don't make the rules here.