But is it required? Can I play games with HDR support on TV without HDR Game Mode? I'm asking because HDR Game Mode isonly in some very expensive TVs.
Hmm, it seems normal to have "HDR game mode" on every TV that I know of nowadays no matter the price. So that's odd.
Is there much difference in image quality using low-latency modes? One would presume so, otherwise it needn't be a mode - the TV could just be low latency.
This is something I wonder about too. There seems to be limited discussion about it. As you say, obviously they turn off some processing.
Since there is not much mention of lower picture quality in game modes I'm going to guess the PQ difference isn't great. And I haven't really noticed on my current Tv with some sort of game mode (although I question it). Then again I've basically only ever run it in game mode...
I would assume smart manufacturers have by now figured out "hey, we can turn off these 3 things every time to get low lag without much impact to PQ". Because every Samsung, TCL, etc seems to be at VERY low input lag in game mode, seems somewhat a solved problem for those manufacturers.
It's very nice nowadays. Years ago when I started looking into TV's and input lag, it was both very difficult to measure, and manufacturers did not pay much attention to it.
Vastly better situation now. The Leo Bodnar tool makes measuring lag easy, and most manufacturers have very effective game modes standard.