Since the last client update, players are experiencing a 4 - 5 second pause during our Multiplayer matches. The pause occurs one time during the mission, usually 12 minutes in. The pause does not correlate to activity in the game or any server operations.
The client experience is the game UI completely freezes -- you can't hit escape, the screen is frozen, and then about 4 seconds later things are back to normal. Most players think they are about to be disconnected, but in this case we see network traffic is never interrupted during these freezes.
The issue occurs in 100% of missions. If you do not restart the game client and play multiple matches, it will still occur in each match.
During the pauses, the MP server is fine and never experiences a drop in FPS. Network traces show game packets never drop off; they continue flowing even during the hangs.