Amazing Work of Sudden DCs
Collect some data about where the problem is occurring. Forum-regular, SlippyCheeze, phrased this much better than I could
It’s possible that the problem is anet, …but the bad news is: nothing fundamental changed in their architecture in the last patch or anything like that. Traffic profile is still pretty much the same, suggesting that there is maybe some intermediate point between you (and your two ISPs) and anet that causes the trouble.
https://www.pingplotter.com/fix-your-network has a good guide for identifying where the problem is, but if you have trouble with that feel free to post screenshots from it and we can help work out where it is.
Unfortunately, the Internet is built in a way that three to five companies handle your traffic, if not more, just inside the continental USA. There are lots of places that the problem could spring from that neither end is responsible directly for.
Or tl;dr
- Visit https://www.pingplotter.com/fix-your-network
- Submit your results via the in-game /bug reporting tool or via a support ticket.
- Also post here if you’re having trouble using the tool or making sense of what you see.