1. There should’t be any big difference between our mupen64plus and mupen64plus 2.5. We compile core, ui, and some other plugins from current vanilla source. If you open retropie_setup and install from source you should have mupen64plus 2.5.
2. Game specific settings must be setup in different locations. Video Plugins store these settings in two files:
One is for rice plugin, the other for the n64 plugin.
Global rice settings are stored in mupen64plus.cfg. N64 settings are stored under gles2n64.conf.
@olapaulakoski use another emulator or plugin