MAMEWorld Forums - Ultimarc - vga5000 sync issue Ikegami TM14-20R

Hey I seem to be having an issue with the sync on my monitor using the vga5000, my monitor has two sync ports and both are connected. I have used a cheap VGA->CGA converter on this monitor in the past, where I basically just cut the connector off of one end of a JAMMA cable and put RCA plugs on instead and that worked decently well, although the picture was kind of noisy and it had poor resolution support. Right now I have a BNC splitter connected to the VGA port on the vga5000, and I've tried various resolutions after installing the drivers.

Here's a video of what's happening although it's flickering a lot faster than what you can see:
https://youtu.be/XegT0pDE8Ls

Thanks for any ideas