Splitscreen is really slow. It oftens hangs. There are few instances when I drop an item, the floor eats it. And I do not get it back. It just disappears.
Trading is bugged when the second player swaps characters. Skill Tree is bugged when second player swaps characters. COM stats are bugged as vending machines for the second player.
Overall, it’s a mess. I only run the second player for the added challenge and chance at drops.