The latest MC2 build now includes an in-development Engine Settings menu for turning on or off the various Scroll3d engine features:
Before now everything has been switched on, so play around with the various settings and see how they impact your framerate/memory/cpu usage. Most of the settings that are labeled "Require Restart" don't actually require you to restart the application entirely, but rather to restart any game you are currently in. IE you can change the settings from the title screen without having to restart MC2.
Anyway, let me know what you think. More settings will be coming here in the future as well, so keep an eye on it.