Gtx 280m sli performance fluctuation

PWPM17x

Distinguished
Jun 9, 2010
2
0
18,510
hi everyone, new member here, i have an m17x with q9000 and sli 280m, it's really good in games except crysis, when i play crysis, it can reach to framerate up to 30fps in combat scene and also still image, however after a short while, the fps will drop down to 10fps and then back to 20-30 again, and it keeps fluctuating, is it the nature of sli in cryengine or is it something wrong with my gpu or in game settings?