Hey,
if you are sure your hardware can provide higher frame rate than 30 FPS and you think you might be limited by some settings try this:
1. Enter the game and adjust the settings to the ones you want.
2. Exit the game and go to C:\Documents and Settings\username\Local Settings\Application Data\SWTOR\swtor\settings and check for a file called client_settings.ini
3. Open the file with Notepad or similar and find the line RefreshRate = xx (xx will be some number; probably 30 in your case). Change the xx (the number there) to whatever refresh rate you want for example RefreshRate = 60. Save and exit notepad.
4. Start the game and see if it has solved your problem.