Disable memories so each chat is independent.
If you want chats to shared info, then use a project.
Not the parent poster but I’ve disabled memory and history and I can still see ChatGPT reference previous answers or shape responses based on previous instructions. I don’t know what I’m doing wrong or how to fix it.
Unfortunately I don't think that's a good solution. Memories are an excellent feature and you see them on.... most similar services now.
Yes, projects have their uses. But as an example - I do python across many projects and non-projects alike. I don't want to want to need to tell ChatGPT exactly how I like my python each and everytime, or with each project. If it was just one or two items like that, fine, I can update its custom instruction personalization. But there are tons of nuances.
The system knowing who I am, what I do for work, what I like, what I don't like, what I'm working on, what I'm interested in... makes it vastly more useful. When I randomly ask ChatGPT "Hey, could I automate this sprinkler" it knows I use home assistant, I've done XYZ projects, I prefer python, I like DIY projects to a certain extent but am willing to buy in which case be prosumer. Etc. Etc. It's more like a real human assistant, than a dumb-bot.