maybe co both cancer curing software (stuff that runs in the background) and VCool will both have lowest priority CPU settings they compete with each other hence the slowdown.
Actually, Folding@Home had low priority and the System process had normal priority, but I was not allowed to change the setting in Task Manager.
I'm guessing the author didn't think someone running VCool would want not to run a background task like ud due to the huge amount of extra heat these programs create.
Yes the cooling programs should be useless with a distributed computing client or 3D game running which is why I thought it was a good thing when I ran Folding@Home and my CPU temp stayed lower than when playing Quake. But it was just the cooling software stealing half of the CPU cycles form Folding@Home. It didn't happen when playing Quake though.
I think that the cooling software is best avoided anyway. I think if the CPU heats up under load and then cools way down at idle this just thermally stresses the hardware. Also, when this would happen (when not running Folding@Home), I would notice a change in the pitch of my system's fans which I found annoying.