Thank you, I will try

And i just noticed, that it happens precise when the KlausT Ccminer closing

Hello. Using 5x gtx 1060 6gb multi algo with Sniffdog Light. When auto-switching algo's or when closing the miner window, screen goes blank and windows shows "Display driver stopped responding and has recovered", then connection to the GPU is lost as well, and mining continue without first main video card. After reboot all is fine, but after couple of minutes the problem returns. Tried to change drivers, mess with -i intensity param - something is changing, but not fixing the problem.
Any advices?
thank you