Xubuntu hasrate is lower then windows (ethash, claymore

[Mins86]

Hello!

I try to setup 3 rigs (6 x GTX 1060 3gb) with Windows 10, and then reinstall on Xubuntu (used several different driver versions on OS's). Get results:

- Windows: ethash ~23 Mh/s per card
- Linux: ethash ~21 Mh/s per card
- Drivers version does not affect on hashrate (some linux drivers dont allow to overclock, but I dont use them in test)

Same overclock, same hardwer, same mining soft (claymore, on linux used genoil too) 3 of 3 times windows give better results.
Have any idea how to get same good result in Linux?