Yes this mod is extremely unbalanced, only 16: 9 resolution is good in this mod.
They clearly don’t understand the balance sheet, and the original balance was excellent, why they messed it up I don’t understand. Yes there are a couple of things that can be slightly corrected so that they work, but they ruined the balance of everything.
I do not recommend this mod IMHO, it will only spoil the whole impression of the game.
I asked the developers of the mod if it can leave an HD resolution without damaging the balance, the answer is - no.
One example, I played and read the mod EE2.4 by Flix to sacred2, this is the standard for editing the balance,