You might see this suggestion twice - do a clean install, not just the OS. Back up your home directory and start fresh, move over what you need from the backup piecemeal so you can tell if something is causing issues.
Well, the Mint install was doing that from Fresh. More concerned with ubuntu cinnamon though as I prefer it. Both times I attempted an install on that were from freshly formatted drives and the only things I had installed was steam and discord. Still the only things I have installed really. First install was from a 22.04 iso image and then upgraded from the desktop to 23. Second attempt was with an actual 23 image. It was broken right out of the box.
Between a 1-5 second delay before anything internet related would start loading. So, I'd wait the 1-5 seconds and then it would actually start loading content.
Yeah, I think I'm throwing in the towel with ubuntu cinnamon. There are more and more bugs popping up now. I don't know how in the world it was so stable before and now it's a fucking mess.
So if that issue is still there on Mint I guess we're about to find out.
EDIT: And I'm back and the Mint issue persists. sigh