HoMM3 HD is a mod (add-on) for the game Heroes of Might and Magic 3.

The second time – at the beginning of my turn, I press to view the turn – immediately after it ends, the game crashes.

Crashes sometimes occur at the end of viewing a turn after a computer player dies; the mod may not be the cause.

I played a bit myself, for a few in-game days, and haven't experienced any crashes yet.