AMD Threadripper 3990x
Crucial Ballistix 32Gb 3600c16
Gigabyte TRX40 Aorus Xtreme
EVGA 2080ti Black x3
EVGA 1600t2
Windows 10 pro 1909
So, the problem is actually two-fold, though I am thinking they are probably somehow related. Problem one being... All three GPUs in this machine are folding at roughly a quarter what they should be PPDwise. (Picture 1) I've isolated heat and power limits being an issue, yet the cards are still greatly underperforming. Estimates are showing 500kPPD each whereas they should be in the neighborhood of 2mPPD+

Problem two, I think being the more unusual and fun to diagnose one, is the error I am getting in the title. (Picture 2) It doesn't appear to be tied to any particular slot. Reducing the number of cores FAH uses slightly reduces the errors, but they do not go away. When the error occurs, all of FAHControl freezes and resets. It also appears to temporarily pause folding for a few seconds. I've tried disabling SMT, setting core affinities to one NUMA node, and even underclocking the chip. None of these are the solution.

Any ideas out there for either issue? Thanks.