Right, but it’s not happening to most users, so something is different for a very small percentage of the userbase, that tends to be caused by external factors to the server infra being used, it could be a bad relay somewhere, an issue with the ISP, al sorts. So narrowing that down is important.
Have you tied using a mobile device with cellular data as the a hotspot and not your usual ISP?, wired and not wifi, etc. What country are you in? This might give some help to narrowing down.