Ran into a couple bugs while playing in my load file with a friend. Over time, my friend and I weren't able to pick up research items that the other had discovered (could only pick up the object if you discovered). Eventually the pick up tool gave out completely; vacuuming and collecting minerals/materials was fine; picking up and placing stacks on different hubs was fine; could not pick up items from my backpack and all researchable items in the world. When my friend spawned in my world and we both got on a vehicle, on his screen he would sometimes teleport underground while somehow still being tethered to the vehicle, every once in a while he'd pop back up Another thing I noticed which isn't really a multiplayer issue is that I noticed the fps lowers significantly when the game switches from the day time to night time cycle. EDIT: #2 did seem like a connection issue at first but later on we realized his connection was fine; this only happened when he got on specifically the crane.