"Last Stand" New

I can't fix this; you need to remove heroes from the map and rearrange them in a new order... it's not critical, let it be.

You can change the city in the same way. It's faster and better. Besides, you don't even need to touch the elves. Can't you cut and paste?

Added 3 minutes later

Well, here everyone has their own opinion... I deliberately left some empty spaces in some places, for realism, so to speak.

I'm not talking about empty spaces, but about a large number of objects. You yourself claim it will lag, but you're placing large clusters of them.