Very slow response for old chats

I don’t know what’s been happening, but it’s made my workflow frustrating, slow, and irritating. All the conversations with specific ChatGPTs that I use for specific tasks and have a long history with saved files and information are very slow overall. Any interaction or request makes them think for a long time, and sometimes I have to refresh, and sometimes it gives an error. I don’t know why I’m paying for this. I even tested it: it’s much faster to start a new task with a new chat than to continue with an old chat with a lot of saved information.