@trwnh@mastodon.social yes, it is in regards to audience no longer being sent out by Lemmy. While it's defined in 1b12 it seems to be ancillary now, so updating that property would mean Lemmy would need to add support for it back.. not the end of the world.
@silverpill@mitra.social it sounds like @fedify@hollo.social was generating one activity for each recipient, which if combined with relatively heavy database calls, would scale quite poorly, even when processed asynchronously.
Batching those db calls is always a low hanging fruit in terms of code optimization.
@Jakub-Urbanowicz can you please:
create a test account on ActivityPub.academy
Run your NodeBB in dev mode (./nodebb dev)
mention your account on your forum?
Have your forum account reply back.
See if there are any errors logged. ActivityPub errors are only logged to console in dev mode.