In addition to the mandatory install, did you install the disc as well? I noticed a big difference after I installed the disc to the hard drive like they recommend. If you already did that though, I’m not sure.
The headaches I have come in the form of bugs, jumpy framerate, client/server disconnects, and shitty beta AMD video drivers… not from gameplay. When I can play, Everything seems fine. It could be an issue with the refresh rate on your monitor. Have you tried enabling VSYNC and/or setting the resolution to match your monitor’s native resolution? What size is your display? Can you elaborate on your setup?
Enabled Vsync, set to correct resolution, turned down the brightness and also turned my graphics below what I normally set them to to get high framerate.
Processor: AMD FX 8150 3.6GHz 8-Core
Graphics Card: Radeon VGA XFX HD-6870
Motherboard: Asus Sabertooth 990FX ASUS
RAM:16GB GSKILLS 1866 (149000)
HD’s: 128GB SSD, 1TB 7200rpm
Case: Antec DF-85