NHF – new heroes for Heroes V 3.1.

I believe it might be causing lag... For example, in the editor, when I place 55 Inferno units, it starts to lag.
My laptop is old: Intel Core i3-2310M, 3GB RAM, GeForce 315M.
As you can see, it's not even a gaming laptop.
You probably have an even older one, or you're loading a save file where there's a lot going on. Because, I repeat, I've tried it on different maps, both small and large. Yesterday, I even played on the "War of the Worlds" map with 8 players, maxed out all the heroes, and there was no lag, thank goodness!)))