Resolution output issues M4 Pro Mac

[Joseph_newall]

I have a Macbook M4 Pro that can't output the correct resolution on a video wall at this club I currently work at. My first issue was the EDID handshake. I got a DR. HDMI 4k UHD using the "Copy downstream EDID channel" , which allowed my Mac to communicate with the video wall at all. Now I am trying to output the correct resolution, which has proven to be a very challenging endeavor. I was advised to use SwitchResx to force the correct resolution. But my Mac is rejecting every custom resolution that I create in the program. I am using the NOVASTAR NovaPro UHD Jr and according to NOVASTAR, the "Screen 2328x1920@60". When I attempt to make a custom resolution with 2328x1920 save the setting and restart my computer, SwitchResX gives me a "Not Activated -Invalid?" message. I might be getting the I suspect I am getting the timing wrong in the settings, but then again, It should NOT be this hard to get the resolution I want out of my MacBook. I get a If there are any solutions out there to output higher resolution, that would be much appreciated.

Thanks in advance

[Zoltán]

Have you tried setting the processor to a more common resolution, like 4k?