I don't know how to do specifically what you are asking, but an alternate solution may be to go into your settings, and uncheck the box for 'show bot accounts'. This will prevent those bot posts from showing up in your subscribed feed, and allow you to see non-bot posts in that community. Of course the downside is that you won't see posts from potentially useful bots, if you care about that.
FWIW, I can confirm I'm having this issue as well. The load balancing hypothesis seems sound given the behavior I'm seeing. Definitely making lemmy.world pretty much unusable at this point.
Milk, milk tea, and 2 different smoothies, but no milkshakes? Bah!