here
and this worked for me.
I think i pinned down the freezing problem. It has to do with Custom Tactics. The saved Custom Tactics are getting deleted from the Custom Tactic save slots after awhile for whatever (unknown) reason. But because the custom tactic still exists in the Quick Tactic menu of the player, the game freezes because the tactic is no longer really there.
The solution for now is to just use the Default custom tactics. If you remove the custom tactics in your Quick Tactics, it shouldn't freeze any more.
and this worked for me.