Oh, thank you so much! That seems to have helped a great deal. The swinging hasn't completely stopped, but it's more tolerable. I'm trying to describe it to the best of my ability, but it's hard without a video or something similar. The upper torso of the avatar and the head just...rock/swing, for lack of better words. Now it's more of a gentle swing and a kind of head-tilt from the avatar when it faces directly forward again, and only seems to happen when I use the laptop mousepad to move the cursor, and thus the avatar's head. But it's something that I can deal with a lot better now with that option checked. Thanks again!