@pitaj That's exactly what I need.
Thank you very much!
I managed to overcome the specific new user speed limits following this post
Re: Topic POST Limits for nodebb-plugin-write-api
However, for existing (but I guess still new) users I get the following:
It looks like from trial and error that a non-admin user is limited to 1 post per 10 seconds as a sleep for 12 seconds seems to cure this.
Is there any way to temporarily reduce this threshold to get a few thopusand posts across?