If anyone is ONLY disconnecting from PVE game modes including Retribution and Uprising and are using a NetGear Router please review this guide from Blizzard:
Hey guys, sorry you’re running into this issue.
We’re currently investigating this problem and were notified of a possible workaround if you’re using a Netgear router.
In addition to the instructions in this link, also try prioritizing UDP ports 26503-36503.
If you don’t mind answering a few questions, i’m continuing to collect information about this issue as new reports arise.
Were you playing any of the PVE events when you encountered this issue?
If so, was it Retribution or Uprising? W…