i am so fu**ing sick of this shit. i must have read a billion posts regard remotefx on server 2012 specifically with nvida quadro cards and either they dont get answered, or its a generic bullshit answer, or they speculate some bogus reason.. SOMEONE AT MICROSOFT FIGURE THIS SHIT OUT!!! i have a quadro fx 4800 first i got an error about no gpu was supported. then i uninstall and reiinstalled hyper-v in hopes it would recognize my updated drivers...well something was different because it now asked me to install RD session host.. well i did that.. and back to square 1... the error yet again. this was one of the video cards that was CERTIFIED REMOTE FX CAPABLE! and now its garbage? hurry and fix your shit MSFT check out the image below. i meet all the stupid requirements. dx11, etc.
http://s7.postimage.org/gitmo3p7v/remotefx.png