After spending two days to setup my Win10 Procame some glorious update and MS decided to reset settings on their own. That was the first and last time. Next day

After spending two days to setup my Win10 Procame some glorious update and MS decided to reset settings on their own. That was the first and last time. Next day I downgraded to Win 8.1 Pro. Win 7 Pro memory and disk usage can't be compared to Win8 or Win10, but I'm happy.