I have been having similar issues, and I am not entirely sure if it is MY connection or not. I am borrowing internet for the interim from a neighbor who torrents a lot, and I can't be sure if it is his activity that is causing me to have these near-constant R0 spikes or if it's a connection otherwise.

I am living in Maryland, with a local ISP - Antietam Cable. My connection seems fine for every other application. In-game, I'll jump from R0 to R14k and back, with multiple stops in between. It's worse in the larger cities, but I still zero out all over the damn world.