Hi! I'm working in Windows with a 30 inches monitor, using a Quadro FX 5800 so have a lot of GL power. I observed that there is a significant speed degradation on the refresh rate of mask editing and layer moving when I maximize AE to the 30 inches monito on a resolution of 2560x1600 even when the project I'm working on it is just NTSC, apparently this is cause for the big area on the camera view, if I detach the view from the interface and trim it to the NTSC size, so I do not see any gray space on the sides, the the speed gets much better. It seems that AE is refreshing the whole view, even the gray areas outside of the NTSC size. This looks to me like a bad optimization of the view, I hope to see this better optimized for CS5, and I was able to reproduce this on any machine I tried with a 30 inches monitor.