Hey @MrGrippz , thanks for keeping us updated on this. I'm sorry to hear the issue persists.
My apologies for the issue with the support site link. Here's a direct link to the connectivity guide. I appreciate that you've got solid bandwidth on your connection - that's great! There can be a lot of other factors that can get in the way of your connection, such as latency, or certain types of connection being blocked.
In particular from the guide, please make sure you're running the launcher and game with administrator rights, you've reset your network hardware, you're on a wired connection, and you've checked for conflicting programs such as firewalls, VPNs, or downloader programs.
Let me know if the issues persist after you've performed those steps, and I'll explain some further witchcraft we can try to get it resolved