I face indeed the same issue, i recently started using my Pi3B+ again to make a Sega only system, and after a clean install, FBNEO performs really poorly. compared to the FBALPHA it used to run before i stopped using that Pi.
In any event I'll try the suggestions here, and also have a look which version is included by default before i update it.

Thanks as always for the swift response.

Hey guys

I followed your advice and I'm pleased to report that GBA games are now working under the other emulator and they are working really well. No more stutter! Thank you! Finally my GPI can run more than GB games! :D

Seems it's really easy to find Saturns for sale on Amazon for quite cheap!

Problem is the games. The are going to cost you a mortgage. Average of $100 per used game.

Jeez. For nearly that I could get a PILE of Saturns and disassemble them and figure them out from scratch.

thanks I will try this out