Windows 7 desktop window manager forced classic mode

compri

New Member
hi,

I have 2 gtx 670 sli'd and i5 3570k oc'ed with oc genie.
yesterday i hooked up my 4k tv together with my 3 monitors(1920/1080) and when i put the resolution on my tv to 4k(3840/2160) i get forced to windows classic mode.
it works when i put the resolution to 1920/1080 though.
I've had this setup working by connecting my monitors to both graphics cards and sli disabled but then my screens have like 15 fps.
i already set my advanced system settings to performance and restarted the dwm service. doesn't help.
i can't imagine my gtx 670's not being able to handle 3 screens + 4k screen.
but maybe i'm just a dumb f***k.
help plz.
thx
 
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