It's not just Chaos DC. I'm on Siren, the Aether DC. Suddenlink ISP. I live in Texas. The issue is on Square's end. There's a few threads around here with traceroutes and similar info showing that the issue is happening at Square's servers. And it's getting worse. More and more people are talking about it in game.

For the past week I haven't done a single raid without at least one person disconnecting. And I've been spamming raids for farming relic stuff (easily 10+ raids a day). And, like I said, not a single raid has gone by without at least one disconnect from someone in the raid.

One of my FC mates lives in Brazil and she'll drop randomly throughout the day and night. She's checked her network, with her ISP, done traceroutes, and a handful of other things. As someone who works as a senior network admin for a pretty big company, I'm pretty sure she understands how to track down the problem. And she has.

Like many others have posted in the other thread in this forum, it's on Square's end. That's why we're seeing people from NA and Euro data center clusters reporting this same issue. And the number of people it's happening to is rapidly growing.