I'm just getting familiar with lemmy fediverse and trying to make my way through it after getting out from reddit. I'm trying out liftoff app for android and I'm seeing way more double posts from different instances from same users. Same content from same users on multiple instances. I thought fediverse supposed to, You post in whatever instance you are and it'll be shared among all instances. I'm more confused now.

Just migrated from reddit to here few days back and I have an eye condition which makes me dizzy when the text scrolls frequently. On reddit, I'll usually refresh the page for new feeds. But on lemmy, the feed is updating constantly which is making me dizzy. Is there a solution to disable feed auto updating?