Conker's Bad Fur Day on iOS Problem

Good evening everybody, just a quick question. I am running RetroArch 1.0.0.2.1 on my iTouch 5G and it runs every N64 game I have except for my favorite; Conker’s Bad Fur Day. Is there any settings that I can change in order for it to work properly? I changed some settings in order for my other roms to play at 100% speed/60fps (these include LoZ-MM, LoZ-OoT, Banjo Kazooie, Super Mario 64,etc) and I tried everything I can for Conker but it runs only at about 15fps max. I appreciate you reading my question. Hope there is a way. Thank you.