I too have an absurdly powerful PC, and the only time I drop below 60fps is when I'm overlooking Whiterun with the Beautiful Whiterun mod enabled (50fps). I game at 2560x1600, 4x AA, 4x TrAA, 8x AF, maximum resolution textures from the STEP guide, and RCRN. Vsync is enabled. While my FPS is great, I do get stuttering when loading textures due to being VRAM capped (2gb). I assume there's nothing I can do to alleviate this except buy video cards with 4+ gb vram?