I got one: Don't touch it if you don't know what it is :P The current settings are pretty much the optimal ones... As for 2D graphics I can only assume this is the framebuffers fault. Just set framebuffer enable = 0 (problem is I've no idea how to set resolution without framebuffer.... so chances are you'll get a tiny window)

EDIT: Alright there is a more optimal set up it seems... as frameskip is disabled by default. I'll edit up the first post with some custom configs soon.