I am playing as a custom civilization against the Mimot in a 2 sector universe where they are in 1 sector and I am in the other. The game is stuck during the Mimot's turn and I am hoping that the screen snapshots below will help you figure-out why it is getting stuck. During the Mimot's turn, they attacked one of my fleets with a 2-ship fleet from the starport. Normally, I would see both of their ships explode but, as you can see, only one of them exploded and the other one is still visible. At the bottom of the screen, the game is still showing both ships in the fleet.
The second screen snapshot below shows that the game is still using approximately 25% of my CPU and almost 100% of my GPU. I believe something in the combat logic is stuck looping through some logic trying to update the graphics after combat.
Hopefully, this will help you figure-out this issue of the game getting stuck on an AI's turn. This bug is VERY annoying!

