Hey @markmolina, iOS15 I don't believe releases until Sept. 20th, with that being said, I yet haven't tested any beta of iOS15 on my Apple Devices and use of Zoom.
However, I would recommend reaching out to our Zoom technical support team and report your findings to them as they can better investigate and assist you with your issue!
I would also encourage reporting a problem when you experience these crashes and having those logs on hand. 🙂