2x gtx275 problem

hi all, i’m trying to develop a patch for 4 projectors using 2 nvidia gtx275 cards. but when i use all the 4 dvi ports the perfmeter tells me 33fps (with mainloop set to raw or increment). it happens if the 4 renderer has only perfmeter attached (so is not a horsepower problem, imho). Whem i attach things the fps slow down. i’ve tried boost, undo and mainloop

alora, can you check if that maybe related to this thread?