Custom Resolution Utility (CRU)

[gus84HFR]

First of all, thank you for the awesome piece of software !

I'm using it to do something a little bit special:
Because it was almost impossible to find a big LCD screen in 4:3 (or 5:4) ratio for my arcade cab, I've decided to put a 4K TV monitor in it (verticaly), and to use only the center with a custom resolution !

To be clear, I've done it like this:

And of course, the black part are not visibles, they are behind the control panel and the marquee.

Here is my setup in CRU:


I'm using a windows 11 PC, with a RTX 3060 and everything works fine.
I use retroarch to emulate most of my arcade game, and when you set it up at the rigth resolution and add a few scanline, the result is incredible, this is almost a CRT screen !


But now the problem: for the SEGA Model 2 games, I use the M2emulator program.
And everytime I switch the games to full screen, my TV goes black and go "no signal"

I've setup the emulator to use my custom resolution of 2160x1728 when in full screen, but there must be a problem with the refresh rate or something.

(I know the game is running fine, because if I look with my main computer via VNC I can see the game running in full screen)

Have you got any idea of what I'm doing wrong ?