My install went well, no issues. My certified HDMI cable still talks to my Yamaha Rx-A3060, and ATV4K without issues. Since I use the ATV4K to get to my subscriptions, I can't really comment on the Sony apps, except Curiosity Stream app, which is working very well. Since I had the system professionally calibrated when new, I have had now difficulties with the color etc. and my calibrator recommended turning off the various smoothing controls which have not been needed. I do have one issue, when the tv and atv4k haven't talked for a day or so, all works fine except for Hulu which balks at the initial transition to the chosen material, interface is fine. It fails on the black screen transition to the chosen content, which I don't think is an HDMI handshake issue. I just go out to the selection screen and go back in and it usually works, if not leave Hulu and go back in, then it works. Some ATV4K resets, but haven't had to reset the Sony since the update a few months ago. This one seems to have gone well too. If looking for issues I'd look at the modem speed feeding the system and at any cable no certified for at least 18GBs. Just my experience over the last 6 months with this great TV. The plasma is still out in garage, but I don't think it's ever coming back.