Hey! thanks again for ya Answer!
Well it must be an driver Problem, but its on 3DC Side, as i said I dont have Problems in other 3D Application, 3DC just runs like a toaster if my GT is plugged in, when i plug it off and restart 3DC it works whitout Problems, and when i Pluggd it in i have 500-700 Fps but when i Move my Mouse/Pen view its like an Laggy 10 Fps viewport.
when i plugged off it ruuns smooth and Good.
my Cpu is Intel xeon Hasw 3.4 ghx x8
its sure an 3DC Issue.
i will try tomorrow go Del the Doc Files,
and no Nothing Changed i dont use 3DC so much, i just use it for Tetxure Painting,and exporting.
greets!