@Solid-One
I did actually. It's not too bad but I didn't want to switch to it at this point because of a couple of reasons:
For some reason it picks up my old save file on my external drive rather than my actual backed up saves on the SD card.
It messes up my controls, the buttons are wrong (though I could change this if I wanted).
Performance was really very nice on 4.0.2 with GlideN64 and I don't see a need to swap unless it is being deprecated by the devs here.
I'm quite happy to stay on 4.0.2 for the time being, but I was happy also to try out 4.1.3 and see the progress being made. :)