Tried out sp-mod #6 but it doesn't seem any better for me, i'm using GTX 1080 FE, the speed is the same both on optimized power limit 55% and full 100% at cost of dramatically higher cpu usage, 0% on #5, up to 70% on #6 (4790k @ 4.7ghz, 4 cards mining). Both versions give me about 310-320 mhash/s at 55% power limit or about 400 mhash/s at 100% power limit. Unless i'm doing something wrong, I don't see any improvements at all by using #6.
I will update the exe with a cpu fix later.