I may not be a user on your instance, but either way, thanks for the upgrade. I was noticing a lot of issues with federation from lemmy.world, and it seems like this upgrade more-or-less fixed them.
I'm just running a tiny, single-user instance, but I want you to know that I appreciate the work you're putting in! I run large-scale infra as my day job, so I understand how challenging this sudden influx of users (and federated servers!) is.
I've not looked for myself, but does Lemmy or Kbin have good, accessible tooling? They're both much more modern so I would expect that it would be a priority, but they're also much less mature so I wouldn't be surprised if little in that way has been implemented yet.