If you're thinking of going to windows 8.1 DON'T .....
Some users (including me) get very retarded mouse "issues" pretty much every fps game is unplayable now.
I tried all the fixes non of them work .
Ex: Black Ops 2 old mouse sensitivity 3.69 (had perfect aim with it )
now 5 feels like 1 and 7 feels like 20
Bf3: mouse goes all over the place
CS 1.6 : worst of all changing mouse settings doesn't effect anything
and its totally unplayable
If anyone had this problem and fixed it i would be very glad if they tell me how they fixed it .
Oh SteamOs where are you