Very recently I’ve gotten absolutely terrible lag when playing the Underground DLC. It’s as if the game servers are running at 100% CPU and can’t process my gameplay.
I’ve posted a video at – still uploading as I type this. I captured about 7 minutes woth of long delays of me shooting the NPCs. I used GeForce eXperience video capture to record the video. Sorry for the lack of audio – I never used the capture software before and didn’t know how to include game audio.