what's slow exactly? once you're connected to the websocket, it's fast, but connecting to the websocket takes around 10 seconds for me. though, i'm on Tor, so I don't know how representative that is. there also seems to be an issue with getting new sub updates, so posts don't show up immediately for other users.
one thing you can do is this: https://pleb.bz/p/weaponized-autism.eth/c/QmVDuajYGA6PEd9PMd6pVvSxZD7HxzfWgJVnM8ceWHSe2F
netlify should be faster for the frontend, but the rpc is more reliable.
Plebscan