I didn't notice any difference in performance. The FPS drops quite a bit though when you get as close to jool as in this picture or closer. Hopefully I'll get that reduced a bit somehow. I've just lauched up KSP and Jool runs at 60FPS looking at it from Laythe distance. Very beautiful imo, I might make a video. My GPU is the ancient GT630, so that's a good sign. As long as you have 105.8MB (subject to change) of ram, it should run the same.