TL;DR Disable all, but one Network Adapter even if you don't use them
SKIP TO 1:32 FOR FIX
A commentor by the name of Adri Del also had this comment with more to add, so if this doesn't work alone try disabling Blutooth as well, and gamestream if you have a shield:
"For me it worked! TY! But I had to disable bluetooth and gamestream too so I cannot play on my shield devices or link my phone to the computer"
As a last ditch effort use VPN according to: ぼると。
Alright, so this issue has plagued me all night. I stayed up to play this game and was stuck with the singleplayer hoping it would be fixed. Evidently it wasn't, so here is the fix which I just found on some random online article.
Here is the aforementioned article: http://www.gosunoob.com/titanfall-2/e...
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