Has anyone figured out the low hashrate problem on Windows 7 when using NVIDIA GTX10xx series cards, RTX cards work fine on Win7 and hash at full speed, I tried diff versions of PM and still only get about half the speed, I got 14 total rigs, 6 rigs on Win7 that work great with no problems but had to switch to GMINER for the time being, and 8 rigs on Win10 using PM with no problems.

Any ideas, I think the last version that worked ok with Win7 if I remember was 5.2 or earlier.