Hello everyone!
Just to cap off this thread and wrap it up, this freezing issue was resolved via a patch on August 31st and we now consider the widespread freezing problem fixed. Our Diablo 3 team was able to work together with the community (thank you!) to investigate and test changes via the PTR Pop-Up | Focus on Freezing Issue earlier last month.
If anyone comes across this post in the future and is experiencing a new Diablo III freezing issue, please post all of the details and a DXDIAG report in a new thread.
Thanks!