Drop in battles

[Slaists]

If you wanted to play in battles as a drop in you joined them from MP. You just checked that you wanted them to drop in your game. I saw no slow down.

There were countless desync issues, didn't affect everyone to the same degree.

There is also an option for continuous search for drop-ins while you play your campaign. I have often been interrupted in the middle of a campaign move to join someone else's drop-in battle.

That's the option that slowed down the campaign map.