I'm not complaining and it is a cool project (from what I can tell). But I think it's fair to say 200 MB memory usage is a lot without providing source code as a proof. Just by feel when you recall what were computers capable of when they did not have 100s of MB to spare.

I remember when I was scrounging memory sticks to get to 512 mb for my windows xp setup. And I was able to play Unreal: Return to Na Pali[0] on that.

[0] https://unreal.fandom.com/wiki/Unreal_Mission_Pack:_Return_t...