Cannot use the Bluetooth and RetroPie-setup menu in Armbian, any input and it crashes while trying to navigate. If you preset Bluetooth connections within the OS, it runs all games and controls really well.

PSX, all runs well
N64, mid range games run well.
Dreamcast, lower end games run well.

Sadly not perfect yet due to Bluetooth imperfections in the menu and need N64 resolution manual preset when swapping to different quality monitor... Just that :(

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Managed to install RetroPie successfully on Dietpi OS.
Still working out:

[solved] why the N64 hotkey doesn't work, can't exit
... Disabled '0' mupen64plus hotkey in ~/all/autoconf.ini
... Added J0B12/B11 at emulation Stop in ~/N64/autoconf.ini [solved] why PSX doesn't launch, black screen
... Replaced all my BIOS files [solved]why NES doesn't run, returns to ES
... Used corrupted roms without headers [solved] why Dreamcast won't show in ES
... Had .7z files in the rom folder. Unzipped the files

Resident evil 4 theme