We are experiencing a network-wide DDoS attempt impacting the performance of the Tor network, which includes both onion services and non-onion services traffic. We are currently investigating potential mitigations.
Update, 2022-07-07 13:00UTC: the overload we saw in the past few weeks seems to be gone now and performance improved over the last couple of days. However, the DDoS is not over yet, but changed its nature. We are currently investigating how we can mitigate the new overload, which is affecting, e.g., our directory authorities. For details, see a recent thread on our tor-relays mailing list.