Here is a bit of info for anyone in the market for a Samsung G9 Neo...
I have:
G9 Neo 5120 x 1440 240hz HDR 10bit color
Asus VG259QM 1920 x 1080 280hz HDR is useless XD
Aoc 1920 x 1080 60hz walmart special from a decade ago or something like that
Surround sound receiver for lossless 5.1 digital output through HDMI
Aoc and receiver is duplicated
All the above doesn't work cause apparently my RTX 3090 kingpin doesn't have enough bandwidth output for it
I can set the G9 to 120hz and it all works fine
Or I can turn off my Asus panel and G9 works fine 240hz
Or third option would be one other output disconnected ie: Aoc or receiver
Just a heads up for multi-monitor peeps eying that beautiful Samsung G9 👌