3D computer games on the PC are especially bad -- with a dozen weird graphic options you cannot really evaluate. What will setting texture quality to "Very High" instead of "High" really mean and how much slower will my game run? Maybe the effect won't even be noticable until a later level. "Occular Blimspace Remapping" is set to 2x but can go up to 16x, how much do I need? Are the autodetected settings optimal or could my game be much better looking if I just increased something, but what?