Splitscreen Faulty In Standalone Mode? V. 4.11

Hey everyone, just hit a wall with what could be causing this, I’m 99% sure it’s to do with the camera, and I have seen a thread with a similar issue but it wasn’t quite the same set up as my game so it wasn’t really helpful.

As you can see, when playing 2 player split screen, the first players screen messes up quite severely.
The game also has up to 4 player capabilities, and when there’s 4 player split screen all but the 4th players screen is messed up.

This only happens in standalone preview, I haven’t tried building it yet to see if I get the same issue but PIE works fine.

Anyone experienced this or got any ideas on how to resolve it?