Has anyone encountered this or knows of a way to fix it...? I've had this issue happen with two games so far - Gabriel Knight 3 and Quake 2.

Basically, the games install WAY too fast using my virtual CD drive and the CD images, that they either fail with an error during the installation or when trying to load the game. With Quake 2, it's supposed to be around 400MB, but after every install it's only around 100MB. It seems to have problems copying the pak0.pak file. This hasn't been an issue before, so it's only very recently that it's started doing it. I've tried setting the speed of the virtual drive to be 2x, 4x, and 8x, but it still remains too fast. I've tried both CDSlow and Nero DriveSpeed 3.00. The physical CD drive isn't a problem. That gets set to the chosen speed and the game installs perfectly fine.