N64 RGB

[pkerga]

Hello
to make my N64 modified in RGB work on the GBS-Control, I must first launch my neogeo AES and play with the syncwatcher, turning it off at the right time. When it's done, the N64 RGB works fine. Of course, when I just turn off the syncwatcher right away, it doesn't work.
Any explanation?
Would there be a way to do this without having to play with the syncwatcher with my AES?
A simple path on OSD ?
Thanks !

https://youtu.be/d4KweYklgzU?si=I76g0AzedOcGaTCO