In theory it should improve, but Lemmy.world getting slammed with a ton of new users all of a sudden really made things bad. It'll take some time to figure out a good solution (e.g. Implementing a way to migrate users to other instances).
I know there's been a spike in users but like cmon. Lemmy has been running for like 2 years. Hexbear has just migrated over and all of their users are already complaining that the site is terrible.