It's your Lemmy instance like lemmy.world dying under all the new reddit refugees.
You can't do anything about it but wait. It'll sort itself out once traffic has calmed down or the servers got boosted by the admins.
Lemmy.world needs to move to an HA setup. Based on what I saw the server admin mentioning in his upgrade posts for this latest build I think he's just running a really big instance in Amazon and then using docker containers for every piece of Lemmy which is making the site very slow. To properly spread the load he needs to create individual servers for the individual pieces of Lemmy. Unfortunately if you're not a sysadmin this type of setup can be tricky and kind of hard to get going.
Constantly, but growing pains are expected and show me people are coming here. Im willing to weather the storm i really hope this community works out and becomes better than reddit ever was