Captain's clipboard issue.
 

I think there's a major inefficiency with the captain's clipboard (where you review radio messages/orders/etc). At the start of a patrol it is fast to open, but by the end of a patrol, clicking to open that thing results in about a minute of locked up nothingness until it opens.

Anyone else have this?

Yes, others have the same problem:
http://www.subsim.com/radioroom/showthread.php?t=108773