Looks like this thread is dead but so is the Le Eco thread so I'll give it a shot...got a Le Eco super X4 55" 4K HDR Tv on clearance from Wal Mart for 349. Not my dream tv but should hold me for now, decent reviews.
Point being about HDR and game mode. The Rtings review says:
Note that when the TV switches to HDR mode it retains the settings from the previous mode it was in, so when gaming in HDR be sure you are in game mode before playing HDR content as you will not be able to switch into game mode once HDR mode is activated.
Now for some 1080P modes Rtings shows lag of 134 ms outside game mode (!) so it would seem imperative game mode is on (4k HDR game mode lag according to Rtings ~37 ms)
My problem is I'm not sure how to be assured game mode is on in HDR content. So far the only HDR content I've played was a video from a USB thumb drive. The Tv pops up a "HDR" icon at the beginning of playing the video letting you know it's HDR. However if you go to settings while the HDR vid is playing, picture mode is simply titled "HDR" and is locked with no options to change picture mode. Whereas if you are not in HDR, you are given choices of picture modes like Vivid, Game, Sports, etc.
So the Rtings comment makes sense in that way.
However I noticed the settings are different in HDR mode than Game mode, for example game mode default under colors it says color temperature: cool. However in HDR it says color temperature: warm (when game mode was the previous mode). This is just one example. Now, does this conflict with what Rtings said about "retaining settings from the previous mode it was in"? Or do they mean something else?
So long story short I'm just worried if game mode is really on in HDR content and how I could tell. I also wonder if there's any way to test myself. I'm aware of the old timer method, but how can you do that in HDR mode? For that matter I dont understand how websites are testing lag in HDR either? Since as I understand the only way to have HDR mode on is play HDR content, and how does that work with either a timer or the Leo Bodnar device?