Have you tried to change the refresh rate, and does it make any difference? Also, if the problem is persisting, please close the game, delete the client_settings.ini file and restart the game. This should recreate a new version.
How about addressing the issue where your program causes windows 7 ultimate to go "unsupported" at desktop, after trying to open swtor. I even changed my graphics card and it did the same thing.
Please look at my forum post.