For a while now, particularly last game, I've been experiencing some odd behavior where the game will just.... stop progressing from turn to turn. I can interact normally with the interface, but can only select ships through the ship list, not by clicking on them. Giving them orders will set new waypoints, but they won't move. Quicksaving and reloading solves the problem for a random period of time, usually about a turn or two. I must have reloaded thirty times last game-- obviously, unacceptable frequency, even if it is an easy fix....
The behavior happens more frequently late game, and seems vaguely correlated to setting Auto-attack on my ships, but I haven't been able to pin down anything more concrete.