Something new to Warcraft 3 is when the entire server will start lagging. Every player will seemingly lag at the same time. the chat will be unresponsive and often you can’t pause or leave the game. Alt f4 is the only was to exit one of these games.
This was never an issue before the new patch. Server lag wasn’t a thing. This recently happened to me yesterday in a 2v2 and every player was from the Americas region. Not sure if it’s the newly added USwest causing the issue