Here's the thing. I have NOT upgrade to 15.2 and I have issues with screen mirroring on HBOmax. I get in voluntary spanish speaking, and voice directives (or whatever it's called) describing everything. It doesn't matter what I do. And, it happens with my iphone and ipad. Its a crap shoot. Sometimes it happens and sometimes not. Last night I deleted the HBOmax app, then reinstalled and never had one issue. We will see what happens tonight.
I think the streaming companies need to be real worried about this because I'm never going to drop my Hargray fiber optic tv as long as these are issues when streaming.
Last, there really is NO solution for all of us, or maybe even any of us. It's all up to the IT groups that are overpaid and under managed?