ChatGPT.com is dreadful. The whole thing chokes when the conversation gets moderately long. It's amazing that it's been allowed to stay this way.

I suspect it’s intentional.

Chat sessions are not metered by token usage but rather a fairly high limit of messages per day or something.

The longer chats you have, the more context and token input. So I think that discourages longer chats, and encourages users to start new chats.