Berserker, Bes, спасибо, просто у меня появилось 4 свободных дня (точнее потерянных), поэтому и решил сделать сборку. Сейчас времени уже много нет. Буду обновлять по мере возможности. daemon_n не будем списывать со счетов, пожелаем ему скорейшего выздоровления и возвращения в наш строй!

Archer30, Yes, I tested the HD mod, 5.1 R5 and 5.2 RC2. I did not have any problems, constant flights, there was only 1 flight when entering the city, and it’s not a fact that it was due to HD mod.
If in the HD mod, constant random crashes begin to occur in different places or situations, I just restart the PC and that's it, all crashes stop, and after restarting the game goes without crashes. I do not know what this is connected with.
It is also possible that you should try to change the mode / stretch filter in the HD mod.
Now Era, plugins and HD mods are being actively updated, so some failures are possible. And if we still get in touch with Baratorch, we will receive updates / fixes for the HD mod for the Era.
Bug with "it seems ERA 3.1.2 breaks the compatibility with some dialogues from WoG Scripts. Currently, issues of Arcane Tower and New Chests have been identified" confirm. However, as Berserker already mentioned, some scripts will stop working / or will not work correctly. The same thing happened during the transition from 2.9.14 to 3.x.x. For such a case, I left the previous assembly HoMM3 ERA HD Rus Unofficial 3.0.5 v1.36.003 от 27.10.2020.

PS: Bes, а куда мне ещё девать безлимитный гигабитный интернет провайдера? )))