first problem : post your video plugin settings (and computer specs) to get maximum help, but generally increase framebuffer access and/or framebuffer textures
second problem : Do the 2 keys assigned to the R and L work normally together (try pressing them both and see if the computer beeps). If they don't then try either setting both to the same key (problematic with other games) or setting them to keys like control and shift, etc.
second problem : Do the 2 keys assigned to the R and L work normally together (try pressing them both and see if the computer beeps). If they don't then try either setting both to the same key (problematic with other games) or setting them to keys like control and shift, etc.