u/Uh_ha-ha

I have bo2 from steam, I downloaded nucleus and the required drivers like they were listed on the main website.
My issue is that whenever I try to play 3 player split screen bo2 zombies, the first 2 instances load fine, the third one does not, I can see a third instance on the bottom in the taskbar, but it does not appear on my screen and whenever i hover my mouse on it , it shows a black screen on the top left quarter of my screen.
2 player split screen works fine, but no audio.
Any help is appreciated.