win10, gtx 1080ti*7 PL75% +55core -500 mem
sp-mod1=262
sp-mod2=260(gross)
Use the latest driver
Default intensity (1080ti) sp-mod1: 25
Default intensity (1080ti) sp-mod2: 24
On windows 7 and 8 you can try to run with -i 25.6
Also check the pool readings. Sp-mod2 should give bether pool results (less stale shares, less rejected shares).