jeeg: Yes I use adblockers, but the issues happen on twitter app on my iPhone as well.
I did a quick continuous ping to 219.88.188.5, not sure how long I was supposed to leave that running.
Pinging 219.88.188.5 with 32 bytes of data:
Reply from 219.88.188.5: bytes=32 time=7ms TTL=61
Reply from 219.88.188.5: bytes=32 time=29ms TTL=61
[snip]
Reply from 219.88.188.5: bytes=32 time=7ms TTL=61
Ping statistics for 219.88.188.5: Packets: Sent = 70, Received = 70, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 7ms, Maximum = 29ms, Average = 8ms
Control-C
^C
Can you try using a browser with no adblocker please? I'm not saying forever, I just want to see if that has an impact. (Yes I saw your comment about twitter on your phone being affected as well)
And for the continuous Ping, I meant to leave that running for a long time, so that when you experience issues you can flip to that window and see if there are pings being dropped or if the latency is going through the roof.
Cheers - N