The current speeds in the x17 beta mod:

gtx 1060 9MHASH
gtx 1070 12.5MHASH
gtx 1070ti 14MHASH
gtx 1080ti 21MHASH

I see improvement on all my cards compared to the fastest opensource miners.
Some cards have around +5% and other cards have more.

Not decided what to do with the mod yet. I need to add another 5%. Alot of code, so I think It can be done with more work.