This weekend will probably establish that when i put in some more hours behind my laptop. As it stands, removing the drivers instantly fixed the directx problems of aforementioned games and gave a noticable gfx improvement on games like Diablo 3. So far i have had no fps drops anymore but then again, i went without fps drops for a few days before (only to have it drop every 15 min or so the days after). So i'm hopeful.
At first i thought it was a problem concerning windows 8.1 and external gpus. A blizzard representative said that they had problems before with applications switching to the internal gpu instead of using the more powerful external gpu using windows 8.1 and geforce drivers. However, it happens with every application (not only blizzard applications), different gfx drivers and different OS (windows 7).
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