bofferbrauer: It does, with the exeption that I have to rearrange all my desktop icon after playing because I got way too much icons on it for such a small resolution. Any idea how I could avoid this?
Before changing resolution to 640x480 click RMB on desktop and untick "View -> Show desktop icons".
They will dissapear and you'll have to launch the game from start menu or GOG Galaxy, but after you get back to high resolution, RMB on desktop and tick the option on - your icons will reapear in the same configuration as they were before resolution change (I think Windows keep they arrangment in memory, to make them reapear as they were before).
I know it's old topic, but maybe it will help someone seeking for advice.
i've bought that game this month and still no official solution to game freezing problem.
Unfortunately AMD trick seem to be unavailible for NVidia card - I can change resolution but can't see any "keep aspect rato" option. Besides it stil crashes when played in 640x480.