Hi guys,
Finally sorted mine out, I followed this guy’s Video, he explains the changes he makes to the gles config about 15 minutes in.
This changes did nothing, however, I did sort it out…
Edited the mupen64plus.cfg and found “full screen = false” change that to true, then beneath that, change the res, probably set to 640 x 480 to your screen res. Mine is alright, Its still 4:3 but its using my entire screen.
Smoothmalik, give it a go, if you need a hand, I’m pretty rubbish myself, but ill give you a hand