I haven't had the issue shown in your video, and I use a fairly different system (Linux, AMD CPU, Nvidia GPU). I think I might
be able to help, but this is mostly just educated guessing. Here's what I'd try, in this order.
First, your video looks like Skyrim's in fullscreen mode. Have you tried windowed mode? If so, does this glitch happen the same in both windowed and fullscreen modes? On my system windowed mode seems more stable for games in general.
Next, when I have problems with the mouse not being properly captured by the game (i.e., turning around stops when the desktop mouse reaches the edge of the window), I find that forcing the game to reset its mouse capturing generally fixes it. Does the problem happen every time or only sometimes? If it's only sometimes, then I expect this to work to reset the game's mouse capturing and fix the problem for the current Skyrim session.
* Pause the game
* Press Shift+Tab to open the Steam overlay
* Press Alt+Tab to switch to another window (or the desktop)
* Alt+Tab back to Skyrim
* Shift+Tab back out of the Steam overlay
I don't know if Alt+Tab works the same in OS X, so you might need to substitute that for the actual shortcut.
Finally, there are a couple things in the Tips & Tricks page that might help, though I personally never used them.
* In How to manually install
, it recommends the following registry tweak:
Reduce mouselook stuttering on Mac OS:
Name (string): MouseWarpOverride
* In Mouse drops to bottom of screen
, it says
In Crossover Games go to the Configure menu, Manage Bottles, select the Steam Bottle,
Control Panels tab, and open Wine Config. Under the Graphics tab uncheck Allow the window
manager to control the windows
Please tell me if any of these work! If not, please explain what effects these changes have. Even if I can't help, someone else might see what's going on.