Great improvements on all my 750 Ti's, thanks for the awesome work!
But you should check the results on the pool.
Looks like I have to rollback the last commit.Nicehash seems to have problems, because all my rigs are showing a lower rate. With the new miner and the old miner. Perhaps another difficulty issue.
With commit 929 on nicehash my 4 rigs (960, 2x750ti, 2x750ti, 2x980gtx+960) working good.
PS. With last commit any changes to --diif make only 50% nooo.