If you UPX compress r_opengl.dll, you can get OpenGL mode to run a little bit faster. [At least, in my experience, it was. It might not be very noticeable for you, depending on your graphics card.]
(In case you don't know what I mean, all you have to do is download UPX from http://upx.sourceforge.net/, then drag r_opengl.dll to upx.exe to compress it.)
(In case you don't know what I mean, all you have to do is download UPX from http://upx.sourceforge.net/, then drag r_opengl.dll to upx.exe to compress it.)