Regarding the Anti-Aliasing. It depends entirely on your set up, but because of the differences in MSAA and CSAA, many people will find that even using a higher level of CSAA will improve performance over a lower level of MSAA. My system actually runs almost identical on 16xQ CSAA as it does on 4x MSAA. Might play with it a little to see if it helps (though on a GTX 2anything you might not see the improvement). Obviously if there is something about it NOT twigging out specifically when its set to 2x this won't help, but I personally haven't noticed the direct-x problem on my current settings.