I would highly recommend providing either an option for normal mapping, or using it by default because it looked better before. Perhaps you just need to pick a better shader -- in this situation it looks like the normal-mapping would only need to consider the sun, but if it really affects the framerate that much I suspect you're using one of the wiki shaders that use heaps of light-sources.

Progress is lookin great laugh

Jibb

Formerly known as JulzMighty.
I made KarBOOM!