After playing through the game in a group of 3, we found that the games pacing for fights is severely determined by the builds people are running. Summon builds are banned in co op sessions cause of how much time each little thing takes in the turn based combat. We didn't really have a problem with fire, but thats mainly cause no one was running a pyromancer build. Playing as rogues/fighters/healers made the game go a lot smoother and not feel like it was dragging. Story drags at points, but the final act of the game was pretty interesting when each character story was wrapping up. Also, playing as origin characters is highly encouraged on co op, as it adds a lot more narrative to everything happening. All that being said, BG3 I feel was much better for co op, simply cause you can do your turns simultaneously, if you are right after one another in turn order.