I tried playing this game, but...most of the cutscenes are not synchronized at all. Also, the game it's kinda slow, like someone from Final Fantasy casted a "Slow" spell on my pc, it's incredible. I don't know what to do. I already tried starting only BGE.exe, changing the resolution (the normal is the lowest), turning on (and then off) antialiasing, and the HW Vertex Processing off. Nothing changed, never. What should I do, now?

P.S.
Why the heck I can't change from 60Hz to anything else?! I think this is the problem, but...how to solve?!

Check the rest of this forum. There are numerous threads that address the issue.

http://www.gog.com/forum/beyond_good_and_evil/how_can_i_change_the_graphic_settings

http://www.gog.com/forum/beyond_good_and_evil/graphical_tearing_slow_game_etc_in_bgande

http://www.gog.com/forum/beyond_good_and_evil/extreme_rubberbanding_cpu_issues_slowdowns_audio_out_of_sync