I've been noticing that alot of people are having problems with their emulators/roms not functioning properly on the Native OS. The configuration detailed below is the configuration that i've always used and have had no issues with.
Recommended setup for use with the Dingoo A320's system memory GAME folder:
GAME ------------> Emulators, .cfg and all other emu support files
l-------> Subdivided Rom folders by system (NES, SNES, etc...)
Both subdivided videogame system folders and the emulators should be coexisting together, directly inside the GAME folder, side by side in peace, just like when the last Metroid was in captivity...
Hope this helps, and a great day to you all.
(added note: "Vice-2.3" folder can be placed in the "3D Games" folder if it makes it easier for you.
Also recommend 1.22 official FW, i've had several reports as well as firsthand experience with much better emu operability.)