I sent 2 reports and nothing... Let's keep waiting, after having bought a game that we can't play.
This Thursday they release an update, but I think it is so that it can be played on MAC, I don't think they will touch split screen, but hey, there is 1% hope hahaha
I reported it via the bug report form quite early in the thread and got a reply from their bug team almost immediately - it felt like their words were well chosen though. They didn't say they were working on it per se, only that they were aware of the issue, and told me to monitor their social media. So tbh I wouldn't hold up hope that this is a priority for them to fix - which is pretty awful given i'm sure they've been aware since well before launch. It actually makes me think that they know its a very difficult fix and may relate to the Ps5 simply being unable to run it smoothly with the what they have ported / optimized it and that there isn't an easy fix.
I wouldn't be surprised if this remained an issue now until they released an enhanced edition of the game. Not sure it would even be fixed then.