No idea. It may or may not help; it could also make things worse. It can help a little, but the problem with the game appears to be severe enough that on modern system it might just crash immediately when you start a new game. I'm getting the impression that the LAA bit, if it helps at all, is only going to buy you some time until the game progresses and starts consuming too much memory.. I also saw someone report that setting the LAA bit just converted the crash to a freeze :\

Ostriv is a nice village builder game. It's still in development, but the base functionality is already there.