FPS is ~15-20 on my Geforce 8800GTS 512MB. That`s because I didn`t optimize some things yet and the level is pretty huge and detailed. My goal is to get 25FPS with max details including FXAA on my PC. The detail level will be adjustable, of course (FXAA level plus on/off , PSSM shadow quality plus on/off, HDR on/off, DOF on/off, sight distance, texture resolution).