So, I won my first game on the random medium map (5.2 beta). Doomsday counter on the global map works fine now.

Thank you, Stardock!

But I still have some problems.

1) Dialog screens with minor factions and SK.

I checked some dialog screens:

Pariden - 50 fps (that's ok)

Keepers of the Flame - 10 fps (too low)

Frozen Realm - 3 fps!!! (maybe they just don't like me )

2) On the spellbook screen I still have about 20 fps.

3) Message "Shard damaged" or "Shard destroyed" - not more than 20 fps.

4) Fog on tactical maps.

On the first screen I have 50 fps

On the second screen I have  30 fps.

P.s. Maybe you can fix it or make an option to disable some effects?

This game can work really fast and stable on the old systems!