I’d say the later to be safe, and if I can do it earlier that would be ideal. I’d need some time to dig into it and figure out the best way to set something like that up as I haven’t tried it yet.
Some of the split screen code isn’t exposed to Blueprints, I’m sure this is all possible via C++ but since I’m not a programmer I’d need to do some research on how to get it to work properly.
In the meantime, someone on the forums or AnswerHub might be able to answer this as well.
-W