Game crashes.

The game has been crashing more frequently during battles, Windows 7 x64, patch 1.8, licensed version. The first type of crash occurs when opening the quick battle window; it freezes and crashes during the automatic battle calculation. The second type of crash occurs already on the battlefield, after arranging the troops in tactical mode, when you click the "start battle" button, it crashes. Moreover, when repeating the same actions, the crash always occurs. But if you attack monsters with another hero, or change the army composition, the battle sometimes proceeds normally. I've played both in the campaign map and in a single Skirmish.