A next step has been done Tinkerboad will get the 29 release.
You can download manually here: https://mirrors.o2switch.fr/batocera/tinkerboard/stable/last/rc/
I’ve did several tests and N64 emulation is so far better than Pi4
PSP emulation is on par with Pi4
About 8 and 16 bit system we do not need to talk about (Atari VCS, NES, SNES, MegaDrive…). These are working fine
Only caveeat: Only one BT-pad can be paired with build in BT controller