You’re not alone Kyle. And there’s ample other threads about this issue, for example:
Game Freezing on Arcade Tab.
Hopefully Blizzard will not only fix the issue soon, but they need to determine exactly what caused this and close the loophole that was exploited. Based on previous posts it appears this issue has been steadily growing and affecting more and more players and regions. I see this was first reported almost a week ago in its most recent activity regarding this issue, so it would definitely appear as if the hacker/exploiter has exploited something that has been causing a chain reaction within Blizzard’s servers, and it has only just now reached a level of more extreme inconvenience, so that’s not good. I hope Blizz has a good team of cybersecurity analysts who can determine what happened, where the breach is occurring, and close it off ASAP.