To clear up confusion:
The Wii64
repo is "1.2 beta" code (i.e. progress made between 2010->2017) as well as most Not64 changes (apart from some things like controller changes and count per op changes). That includes Rice, new UI and hi-res texture packs, most of which is probably buggy/incomplete.
FIX94 has added Wii U DRC/Gamepad stuff into a fork of Wii64 1.2, these are considered unofficial builds. If you find issues in that specific functionality please direct them to FIX94, other core issues can be directed to
here. Eventually I plan to merge everything back into Wii64, but we'll see. I don't like merging things in that aren't in standard libOGC/devkitPPC but that may change.
Rice is inferior to glN64 in many ways as the port is incomplete/buggy and the plugin hasn't progressed further. It may be faster somewhat but that's probably mostly due to missing functionality. I'll release the Hi-Res texture packer at some stage so people can try it out.
Good to see some interest in Wii64/Not64 in 2017