Yep, averaging out at 5% packet loss whilst latency stays low seems to be a sure sign. Setup a Broadband Quality Monitor if you want to confirm its the same issue, should look like everyone else with red icicles of doom along the top. Also, definitely not fixed.
So, I went online at around 1830 and the recent problems seemed to have gone away. No rubber banding, no lag. Until 2 minutes ago where it went back to how it was. I’m not sure if this is connected but I’m worried it was a short lived fix.