Can't connect to the game or when I do connect I have insane lag/rubberbanding when I change realms for M+/raiding

This issue started a few hours ago, about three. I have done at least 4-5 M+ dungeons this morning without any issues and all of a sudden I started lagging. I live in an apartment complex and I have access to my private wifi and also the complex’s wifi that is shared amongst 4 people. I can’t login to the game with my usual wifi, I get stuck on the “Logging into the server” screen, when I use the alternative wifi connection I can login but I get insane lag/rubberbanding but ONLY when I realm hop for various content.

Thank you in advance