Add an option to toggle renderer (requires restarting the game)
Reduce Z-fighting in OpenGL
Fix saved resolution being ignored with auto resolution off
Improve menus related to auto resolution
Only NRO download is required if you installed a previous 1.6 version.
For the full notes on 1.6 read here: https://github.com/STJr/Kart-Public/releases/tag/v1.6