Try experimenting with AF=85 with HT on - that gives you 1 thread per physical core. And that way you can keep HT for any windows apps that can take advantage of it. 

Yeah, seems logical now. Would be nice if for instance core2 could be used as main thread, with the remainder of core0 being used as some sort of headroom. Probably easier said than done, but I am not that into the technical detail stuff ;-)

AF = 15 did solve a bit of the blurry problems I was experiencing, so it's going to be a tradeoff I guess.

I have HT turned off because I could not get my OC to be stable with HT enabled.