I'm using Minecraft version 1.8.7, though previous versions of 1.8 have had the same issue
Current Optifine version is 1.8.7 HD U D6
Basically, what happens is that whenever I move, if I try to use my mouse, even subtly, my cursor moves a great deal, spinning me around multiple times and often making me look either completely up or completely down in the process, as if I threw the mouse across the room and it tracked it. I don't have a crash log, as it doesn't crash, but it makes the game nearly unplayable as Optifine is pretty much required to be able to enjoy Minecraft (without the mod I might get 8 FPS on a good day, and with I can sit content at 30-60 with less stuttering)
Also, possibly unrelated, my keyboard inputs may lag at random intervals, such as my character continuing to move for a second after I release the key
Without the mod, the issue is nearly nonexistent, or if it exists the game runs too slowly to recognize it or something
game settings are:
Any help would be greatly appreciated!