I am stumped that they won't do a 60fps target for a remaster of such an old game.
30 is only ok when it's rock stable and input latency is barely noticable.
I remember being able to play pokemon radical red for longer than that,
but I was using the old emu4vita.
Which game were you playing, maybe some are more demanding?
For open_agb_firm you'll have to switch payloads which is a little annoying. (iirc)
But if you have a large library of gba titles it's definitely the better choice