I said this on Masto, but this tells me nothing as written. You can get the first game to run like that, too.
The thing is, if it runs that way on an empty map and degrades the same way the first one did, I can't see it not crashing on a full endgame map. So... how does it run on endgame? Or is this endgame and it runs fine at first? Guessing no, since the devs themselves said this was a problem. And, well, I've seen footage from streamers and it certainly chugs on small maps, too.