3 and 4 Player Spliscreen Black Screen

I have been able to set up two player split screen very easily but when I add another player the screen goes black. Does anyone know how to fix this?

Found a fix if I turn off constrain aspect ratios for all four player cameras to show up.

Thanks for putting your own answer once you found it! I just hit two birds with 1 stone trying to find how to fix aspect ratio in splitscreen, and I also wanted to know why 3-4 player doesn’t work :smiley: