I have found a strange bug/problem with Blender while running on Windows Vista. I am pretty sure that this may affect the versions of Vista in which Aero can be run, but it could very well include all versions. For a little background, my computer has Windows Vista Ultimate 64-bit with all the newest updates installed. I am currently using Blender 2.49b, and I do not have Python installed. I am using a laptop with a Core 2 Duo T9550 processor, a 250 GB 7200 RPM hard drive, 4 GB of DDR2, and a GeForce 9300M GS.
If “Desktop Composition” is not enabled in “Visual Effects,” the performance of Blender is negatively affected. The interface lags, and any movement in the 3D space is sluggish. However, when Desktop Composition IS enabled, the performance of the interface/3D space is great.
For anyone running Blender on Vista, could you confirm/deny this issue?