Ok first off let me say I have done everything i know to do. I can run raid finder all day long with all my ad ons without one problem. But when I go to raid with my guild on the weekend all the sudden my world latiencey goes completly nuts. I mean nuts like between 3 - 5k. I have turned add ons off I have collapsed discord and Im a lost at what to try. Its not the home its the world any dungon is fine raid finder is fine with 25 others but my raid group of 15 to 20 people it goes nuts I dont know what to do. BTW its just me the rest are fine.
For some reason this has been an on-going issue some folks have been running into.
https://us.forums.blizzard.com/en/wow/t/main-thread-castle-nathria-lag/827726