Same thing here. We are 30h+ still in Act 1 and a few things freeze the game for like 2s. Swapping characters, summoning minions... We're doing our best to ignore it and just enjoy the rest of the game, but it got to the point where we don't see many things that happen in combat due to the freezes. The game also freezes forever if you try to sort your inventory while putting things inside containers on certain situations, but this is an engine bug that was also present on Divinity 2.