The computer is fine. I can play on 320x320 maps without any problems on EWA. Moreover, I mentioned that even maps that run perfectly in a clean version of the game don't start, meaning they are not modified. But we will try.

The files don't affect other maps. And the problem isn't the map size, but the number of objects on it.
I removed half of the creatures from the map (NCF - Special Edition_2021-02-23.h5m), and now it runs on the highest graphics settings even on a relatively weak laptop (compared to my computer).
Link to the map: https://drive.google.com/file/d/1f2f...ew?usp=sharing

Added 1 hour 26 minutes ago

This means that someone can't just copy the data with creatures for themselves.

You can't just take a .pak file with creatures, add/remove them, and expect it to work.
For it to work correctly (so that the creature spawns on the map, is part of a composite army, and can be recruited in a refugee camp), you need to make the corresponding changes to the following "....pak" files: "___NCF_share_2021-02-21.pak", "___Scripts-Add_2021-02-21.pak", and "___RefugeeCamp_only_NCF_2021-02-21.pak", and for the ability to recruit creatures in buildings, also in the corresponding "___Dwellings_....pak" files