I recently started folding again because I purchased a GTX 570. Initially it was working at about 12-13k PPD, but I've noticed that last night and this morning it has dropped significantly to 6k PPD. Why is this? Is it just working on a tough WU at the moment or have I missed some setting out somewhere? I have set the CPU client to idle and GPU to low priorities, and just this minute I have just re-started the CPU client with SMP -3 flag to see if my cpu is hogging the GPU. But I don't think it is because everything was working fine for a few days at around 20K PPD. Cheers.