My Vero 4K+ has yet to arrive, but when it does, I’d be very happy to help out with testing anything 3D-related, if that would help. My TV is an LG OLED65G6.
Comments on other issues raised in this thread:
Virtually all of my 3D stuff is ripped to MKV rather than ISO.
More than happy to rename files with any necessary naming convention.
A final (possibly stupid) question: is there likely to be any difference in image quality between frame-packed 3D output from Vero 4K (once it’s working) and RPi 3B+? (This thread on the Kodi forums suggests not all media players have identical image quality in 3D: https://forum.kodi.tv/showthread.php?tid=221407 )