I was watching it on Amazon which also has live with HBO. I've tried it before but don't remember about the quality being way down, but I rarely ever watch anything much live on HBO. I guess it could have just been some type of problem going on. I use an Apple TV 4k box. Amazon & AT&T has that thing going on so I cannot get the Max app. I wouldn't want it anyway unless its truly equal in picture quality. I've never seen any cable system equal to what you can buy on Amazon with cable programming, that's any where near their quality. Certainly not Direct TV either which I've had forever. I'm not saying the picture is terrible on those systems, but I've seen some cable HD that was bad after enlarged on a projector. Especially dark scenes. I didn't need to do an A/B comparison really but I've done it many times anyway. Mr. Robot was in a class by itself though, the difference between the two.What did you watch it on? I used the HBO Max app on a Fire TV 4K Stick and the picture quality and audio were very impressive for a 1080p stream. There have been a number of reports that document they have just about doubled the bitrate of streaming content on HBO Max from the previous HBO GO and HBO NOW apps. I can see the difference. Many who used HBO through the Amazon Prime Channels for the best quality now say the the HBO Max app is of the same quality. I have no idea what the quality is like from a cable set top box if you are watching it live as a HBO linear channel. That may be a compromised live signal. But, the HBO Max standalone app just a few minutes after the live airing began was a very acceptable quality.
So, I was just curious about it since really didn't care for the quality of the Perry Mason picture live. I'll try it again later and maybe watch it on HBO Now before they take it away, just to see how it looks.