I'm having troubles with sound on Neo Geo roms (FBA and MAME cores)
The sound is played "slowly". It sounds cropped and echoing. Video goes fine.
I´m using Mame0139 core.
I tried some configs in retroarch settings in a attempt to increase syncronicity but I was no able to solve the problem.
When I used MAME (mame32 and Mame32plus) under Windows system these roms worked fine in the same PC.
It is an old P4 (2.4GHz), 1.5GB RAM, nvidia GeForce 6600 (AGP) 256MB, and Batocera System info shows 2.1 Mesa 18.1.4
I've tried same Batocera on an HP Netbook x86, AtomN550 (1.5GHz), 1.4Mesa 18.1.4 and worked fine....