https://spec.torproject.org/proposals/362-update-pow-control-loop.html This proposal suggests a new algorithm for onion services to use to select the suggested effort value for the proof-of-work algorithm. The existing algorithm has some weaknesses, mostly stemming from the fact that the same request sent at different points in time might have different effects on the new suggested effort. The proposed algorithm is based in a more fundamental analysis of the goals of the control loop. Please feel free to open tickets on GitLab, discuss in the tracking ticket, torspec#329, or discuss here. :w