The R1 accounts, like mystery data, etc, have not significantly impacted the amount of data clients are using at a single point in time. Our team are monitoring the network closely and (as mentioned by Gian in his email) we will stop signups
if we believe that the network is being directly impacted.
It's truly best if you do continue to post your results and findings so we can pass onto the network team to investigate. That is the surest route to improving performance. Assuming we will do nothing about it and not posting info is kind of self-fulfilling