I've already did most of the suggestions on the list

Actually I'm using win 10 only for gaming; right now dark souls 3, ut2k4, some dota 2 etc.
For dota 2 I might switch to kubuntu in the near future, since it works on linux w/o problems.
Ut2k4 runs on linux machines too, but too much of a hassle to install.
My main os is Kubuntu 16.04, I do all the work and surfing with Kubuntu.
Connection to the internetz, windows or kubuntu, is only per vpn, would advise for everyone.