Just use TWiLight Menu++. It includes gbarunner2 that is quite stable with most of the titles. mGBA is sluggish and the sound quality is not very good...
test on New 2DS XL witch mGBA 8.3.0...confirmed problem!.So I just recently bought a New 2DS XL and softmodded it. Everything works like a charm.After I am done playing mGBA, I go to close it it crashes my system. Has any one else had this issue and if so is there a fix? Thanks for the help.