http://bugs.winehq.org/show_bug.cgi?id=19202
--- Comment #37 from evanh evanh@clear.net.nz 2010-10-14 20:48:09 CDT --- Renaud, Is it possible that your display is a 75 Hz display? If so then that would explain why the vsync option doesn't make any difference. Ie: Your CPU is max'ing out at 70 Hz and not being limited by the 75 Hz cap.