Looks like the 1800X and 2583 are running different tasks though, Mark. ThreadRipper 1, however is on the same task per GPU, and at about the same percentage of completion, but indeed shows 10,000 points difference for just those single tasks.
And that particular task is likely...90 minutes on a Ti?, so that would certainly cause the 50k ppd difference. Interesting.
Once the Sun sets, I'll try getting the GPU to work again on Linux, for my AMD setup, see if that makes a difference, then go back to Windows and toss in another 2 1080s to see if that has any negative effect on that system, strains the BUS, etc.