That might just be all me, I'm moving several communities over:
All the communities on midwest.social that I post daily comics to. I'm not really sure what the federation issue is exactly so can't comment on scale. What I'm seeing is that my posts will randomly not federate and get lost unless I sit there and "jiggle" it a bunch by upvoting/downvoting it. Seems to be related to image posts since I don't think posting news links to !msp@midwest.social ever failed.