Found it: https://lemmy.world/post/9151211

Thanks for the link!

From your link:

I found a post or two claiming that the issue is that the API is implemented using websockets only, so it’s not as simple as just turning it off. I really hope that is not the case, since I currently can’t read anything on the frontpage that takes more than a few seconds!

I also see in the GH issue that I linked there is a mention of that issue:

New posts should probably never even be added to your feed automatically. They should only change if you refresh the page.

A maintainer replied that the issue may be fixed in 0.18.0 (not sure whether it fixed both issues or only one of them though–will see I guess).

Would you happen to have a link to the GitHub issue about this? I am unable to find a related ticket to track.

Edit: found something not totally related but another issue that I’m also facing: https://github.com/LemmyNet/lemmy/issues/3008 (e.g. sorting by “new” causes to suddenly show bunch of 5d old posts after a few seconds)