Seems more like MS is trying to kill pc gaming.
Windows 8.1 badly affecting some games, glad I haven't 'upgraded' yet
http://www.eurogamer.net/articles/2013-10-21-windows-8-1-causing-mouse-lag-that-badly-affects-games
http://www.reddit.com/r/windows/comments/1oor43/windows_81_warning_for_gamers_issues_with/
A Reddit thread reporting the issue described Deus Ex: Human Revolution and S.T.A.L.K.E.R.: Call of Pripyat as "close to unplayable" as a result. Apparently Call of Duty games and Metro 2033 are affected as well.