Ok, I think I may have fixed it. I replaced particle_systems.txt with another particle_system from an another mod called "Europe 1805".
That helped me with the issue so far with no crashes. Now I will take a look if it works with or without enhanced version or RAM utilizer.
[EDIT]: After further testing, I've realised how delicate this needs to be performed. I couldn't make it work on my C disk, so I installed the game on my D disk instead. I've played like 5 battles without any crashes.