This is a complete mystery to me. Can you share your save file?

Unfortunately, I no longer have it... I didn't wait and deleted it (when I have a lot of save files, the game takes a long time to save), and I'm already playing your third game.
"Gardholm. Chapter One" is already finished (it's not groundbreaking, but it's quite good - and importantly, it's bug-free). Now I'm playing the scenario [L]: "Monster Hunter." So far, I don't see anything too difficult on Veteran difficulty at the beginning (manticores are quite manageable with acceptable losses - although there's another stack of them, but that's not a big deal... there aren't many of them). But about this, I'll say one thing... there's some kind of bug with the scripts (movement??). Everything is easily defeated with this (screenshot) - (I played on Veteran difficulty - summoning, and it became too easy). I got to the underground without any losses at all. My advice for the map is: diversify the battles in the graveyards (it's monotonous) and reduce the number of creatures created for souls even further.
P.S. I always play unfamiliar maps on Veteran. I got my butt kicked somewhere in the middle of a huge map/campaign when I played on Master difficulty after playing on Hero difficulty)) now I'm playing it safe).