Radeon R200 core video cards (e.g. Radeon 8500 or 9200, not 9500+) have possible Full Scene Antiliasing/internal geometry pipeline issue at some resolutions:
Why do I get an "Access Violation"?
Try not using any cheat codes (disable all codes and reboot the ROM). Make sure framebuffer emulation (video plugin controls) is off.
Why is the game very slow/jerky?
Due to the way it is programmed this game has higher than normal system requirements, you will need something closer to a recommended system than a minimum spec. system (see User Manual for details). Disablingor enabling Advanced Block Linking (ROM Settings tab) may help. Adjusting Counter Factor (ROM Settings tab) may also help. Anything you do to improve performance will help (see User Manual). You may prefer to use a different emulator.