Graphite has been loading PRs awfully slow for me for the last ~2 days and has given me an error quite a few times. Is there an ongoing incident?

Hey! Thanks for flagging, and sorry for the slow loads. No ongoing Graphite incident, but this lines up with degradation on GitHub's side Aug 24-26 (including a database incident resolved Tuesday evening). PR data fetches were slower than usual and intermittently failed during that window, which is what caused the errors you hit. Things have been recovering since. We're also aware some large PRs load slower than they should in general, and the team is actively working on performance improvements there.