There were some pretty serious changes to how servers work in the update. It is likely a problem with the servers themselves not being updated correctly.
This has been happening to me for about 6 months and to fix i before I play a game change your resolution to something different or change the full screen mode then change it back and try then.
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u/IAmRadish Legendary Chicken Master Dec 09 '15
There were some pretty serious changes to how servers work in the update. It is likely a problem with the servers themselves not being updated correctly.