I recently set up RetroPie on my B+. What is wrong with N64 emulator? I have graphic errors and no sound.
(Sorry for issues with thread. I am new to this.)
You may want to check the RetroPi N64 ROM compatibility list. Unfortunately, I don't recognize the game from your screenshot to point you to the relevant line, however, note that only about 10% of the listed games are marked as stable.