Ask HN: Why are Reddit's webpage elements so slow to load?

I have tried several browsers and I keep getting the same subpar UX. Everything is slow. I click on the Chats icon and it takes several seconds to load. Switching between chats also takes a couple seconds. When I send a message, it takes 3-4 seconds to show up in the chat.

With each update to the website, they've just broken more and more things. The legacy chat UI was much better and it allowed for deleting chats as well. Now you can just "hide" them.