Curious,
how many activitypub connections do you have in your streams site (you and other channels in the same site)?
I have (me and others) +- 100 in our site.
I have problems when I post for 50 or more ActivityPub connections, my site use 100% of CPU.
It seems that I don't have this problem when I post just for zot people.
@
Giac El Vecio