Straight from GPG the games pathing has been overhauled in SupCom2. This was a big part of the issues with the AI units that was causing lag because of pathing. Among other issues to that’s been fixed and optimized. So rest assured the game will play much better.
Author of the Neverwinter Nights Eye of the Beholder Series of Mods. Now integrated into Steams NWN: Enhanced Edition