Here is a link to the saved game in Dropbox.

The wait/hang is on the second move after the autosave after there is an attack from another player. Task manager shows 100% GPU and one CPU processor 100% while the wait is pending.  The screen is responsive but anything that requires that it be my turn tells me to wait.

If there is more diagnostic info that I can provide just ask.

Thanks in advance.

I just got back into the game, playing Crusade 3.05 now, and got this too, now in several games, mostly mid-game. It is an older prob I experienced with earlier versions, but thought to have been fixed yet.

The prob with reproducing is that - at least in my case - I can get around this by save/menu/reload.

After reloading the turn button is active again, (saying "turn" instead of greyed out "wait").

But once it starts, it occurs again and again, in shorter intervals, so at some point I'd have to save/reload every couple turns.

In the middle game it is seriously frustrating, and keeping me from completing games.

Edit: FWIW, I had this earlier on a completely diff. machine, now after ca. a year it's a brand new one, Win 10 64 Pro installed from scratch.

Edit2: unlike the OP, it does not seem always to be related to battles for me.