Hey I've been wanting to do a multiplayer play through but personally I'd prefer constant split screen rather than shared and horizontal rather than vertical. I changed as mentioned in the other post but it's resulted in some issues.

The Horizontal split doesn't pan vertically, ( or at least downwards, unsure if specific ) so entering a map from a high pipe results in being unable to ever see the rest of the map, you can go down there and play or die. But you can't see anything.
i.e https://imgur.com/mHDroiy

Unsure if this is a SplitScreen co-op side issue or a SBCameraScroll issue but SBCameraScroll functions fine in single player, and I think in vertical split screen, but in horizontal split screen there is a large black offset on the screen at all times, rendering it unplayable.
i.e https://imgur.com/QSdJnfZ

If you have any insights or fixes that would be awesome, thanks.