I have an 85” QN90B and HDR on it looks fantastic, always bright and very clear. I’ve never run into the issues you’ve described here, maybe it’s only specific models?

What do you think of the Hall effect joysticks? I was thinking of getting some, but been kind of turned off by reports of the square shaped output they have making rotating worse

Not sure, I haven’t used wifi-based headphones before. I just know I don’t notice any audio latency when using APTX-LL supporting headphoens/adapter that I’ve noticed when just using regular bluetooth

As long as you use headphones and a bluetooth adapter that both support APTX LL (low-latency), it’s instantaneous for me. Same as using it wired.

From what I’ve read, the boomerangs ps3 controller wasn’t actually dumb at all. It was apparently extremely comfortable to hold because of the way it curved into your palms and the placement of the buttons and sticks felt really natural. But the poor reception to the look of it basically bullied Sony into reverting to the classic DualShock layout.