I get 30+ FPS in LFR on with all graphics settings on High. But when I do my 25 man guild raids I have to turn change all of my settings to low, with only Projected Textures enabled and Particle Density on Good, and I get 10 FPS on most fights if I'm lucky.
Any ideas of what it could be?
NVIDIA GeForce GTX 650 Ti
Intel Core i5-3330 3GHz
8GB of RAM