holy cow, this input lag is beyond bad, I guess those who cares including myself shouldcontact sony ASAP and see what they have to say. I literally just bought this tv last Saturday, if Sony can't give me a acceptable response then this TV is going back to the store next week. I had only been playing games in 1080p, input lag was great, but after I saw rtings result I booted up DOOM and change the resolution to 4k with scaling at 50% so I can still run it on 60fps but out put at 4K. There are noticeable lag in 4K output compare to 1080p native output. And when I switch the picture mode to HDR video, it was trash, the game is literally unplayable and the tv is not even processing any HDR metadata, just simple a change in picture mode completely destroy the input lag. I even turned everything off in motion, color enhancement etc, didn't improve the lag at all. How can a company that hyped HDR and 4K through their roof can't even get their own 2016 TV to function properly with the other product they are trying to sell. Incase you guys are planning to email Sony, their support will give you generic response like update firmware, chance HDMI to enhanced mode. Start off by telling them those are done and I would directly link and qoute rtings and tell them what your inquiry is about. I know that there should be at least 1 more update for this TV since it had yet received Android TV 6 update, I would demand answer directly from their engineering team whether this can be fixed or not. Not their clueless "tech support". If they can't give me a clear answer and approx. time frame then this TV is going back to bestbuy.