[lelandfe]

I believe this is because they don’t lazyload the document.

The entire conversation sits in the DOM.

[porridgeraisin]

Yeah - is such a large dom of essentially text expected to be that slow?

For what it's worth I use a small script that essentially deletes old chat messages DOM nodes which significantly speeds it up.

[lelandfe]

Yes, because under the hood it’s much more than just text. It’s not hard to imagine dozens if not hundreds of elements are contained within each prompt+reply pair.

I bet there’s also some React performance issues involved here too

There are some real table stakes FE perf issues with the ChatGPT site