Estimate TPF 2hrs 26minutes
Fahcore 0x17
You can try erasing your current work units and download new ones and see if that makes a difference.
delete the folders here C:\Users\your computer\AppData\Roaming\FAHClient\work
Erm, then 2 last things,
1) I remember reading that if you have like 6 GPUs and only a dual core CPU system, the CPU will be the bottleneck. So try not to fold on the CPU and see what happens.
2) Leave is for 1 hour and see if the PPD goes up.
Sorry I don't have any more suggestions then. ):
Perhaps like the above poster said, wait for 30-40mins.