Hi there,
After speaking with our testers and consulting other reviews, I can confirm this TV doesn’t currently support HDR10+. While most recent Hisense and Vizio TVs support both, only the Android TCLs do, and even then only some of them. Unfortunately, we aren’t sure if it’s a limitation of Roku or just a design decision by TCL.
Hi there,
Sorry for the delayed response.
I’m glad you were able to figure out the issue!
With regards to deleting your post, that’s entirely up to you!
Chances are though, someone else might end up experience this issue and your post could be extremely helpful to them!
In either case, we appreciate it! :)
Thanks Dylan.
The more I think about it the more I wished Samsung would advertise that it can pass DOLBY MAT over ARC. That would be really helpful to know for someone with an older AVR that does support Dolby Atmos, but not eARC. I wonder if it’s a feature unique to 2021 Samsung TVs.
Not sure if I should delete this post, but I found out what the problem was: I had my Philips Hue Play HDMI Sync Box hooked up between the AVR and TV eARC port, which can only handle HDMI 2.0 ARC audio. Once I removed the box I was able to get full 7.1 PCM from my PS5, and Dolby MAT/ TrueHD from my Xbox one X.
I am still surprised about the automatic lossy compression that the QN90A is doing. When I use ARC on my Q9FN then the Xbox refuses to turn on Dolby Atmos since ARC does not support uncompressed or losslessly compressed Dolby Atmos. The only reason I think it works on the QN90A is because the Xbox is sending out a Dolby MAT signal, and the TV is then compressing it before passing it on to the AVR. I wish my Q9FN could do that, since I leave the Xbox connected to the TV so I can use VRR.
Hi shawd1,
So, the new game bar makes it easier to access Game Mode Settings and adjust things like aspect ratio, as well as check input lag and frame rate. If you want to see what it looks like though, there’s a picture of it in our settings.
Thanks for the quick follow up Dylan. I guess the only way to test it would be to send a 4K 120Hz 12-bit RGB signal, which to my knowledge none of the next gen consoles support. I used to be under the assumption that you needed 48 Gbps for 4K 120Hz with HDR10, because I saw each CTLE Channel on my LG 65SM9500 use 14.835 Gbps; which means all 3 combined would require about 45 Gbps:
But I must be misunderstanding something since the Xbox Series only supports 40 Gbps. I’m guessing the diagnostic screen is not showing the actual TMDS link.
Have you changed hdmi icon on pc in control panel?
Not when I had the Xbox Series S connected. My new theory is that the Xbox SS is sending some kind of weird CEC signal that is disabling Local dimming, and also messes with ALLM, keeping the TV from switching out of game mode automatically.
I was also trying different resolutions and refresh rates to see if the signal using Fixed Rate Link (FRL) or Transition-minimized differential signaling (TMDS) would disable local dimming. It did not make a difference on my PS5 or Xbox SS.
I was surprised to see full RGB at 10bit, in SDR and HDR. Sadly VRR doesn’t seem to work, at least from what I was able to test on my Xbox Series S. I can see the Hertz fluctuate in games when using 1080p/1440p@120 and 4K60, but the number doesn’t move when set to 4K120. At first I thought it might be an LFC issue, but even 120fps games like Ori and SW Squadrons stay at 119Hz when the Xbox is set to 4K. Not sure if this is a limitation of the TV or the console since the same thing happens on my Samsung Q900R.
One weird thing I noticed, that wasn’t mentioned in the RTINGS review is that Local Dimming is disabled and unavailable when receiving a 120hz signal. Or at least that’s what happens when I set my Xbox SS to 4K120. On my PS5 the Local Dimming setting isn’t greyed out at 120Hz. I wonder if it has something to do with the Xbox sending full RGB, and the PS5 only 4:2:2 at 4K120. Or maybe the TV thinks the Xbox is a PC and goes into monitor mode. Either way I am not complaining since I would recommend turning off local dimming in game mode anyway; or any mode at night time. I still can’t fathom why the algorithm is so atrocious on LG TVs. I have a Vizio P55-E1 which also has an IPS panel with a similar FALD Zone count and I never see this kind of blooming, or those slow zone transitions.
Let me know if there is anything else I can test, or if interested in a mini-review.
In person it looks fine, but the uploaded picture seems to be a bit compressed and doesn’t look right. Let me know if there is a better way to test 4:4:4 at 4K120 properly.
Any chance you could buy and test the 32" frame, seeing that it has been heavily discounted? Maybe test it as a monitor like with the 48" CX, that way we could vote on it in the monitor section.
Thanks for checking Dylan
Thanks Dylan.
The more I think about it the more I wished Samsung would advertise that it can pass DOLBY MAT over ARC. That would be really helpful to know for someone with an older AVR that does support Dolby Atmos, but not eARC. I wonder if it’s a feature unique to 2021 Samsung TVs.
You guys are awesome. Take care
Not sure if I should delete this post, but I found out what the problem was: I had my Philips Hue Play HDMI Sync Box hooked up between the AVR and TV eARC port, which can only handle HDMI 2.0 ARC audio. Once I removed the box I was able to get full 7.1 PCM from my PS5, and Dolby MAT/ TrueHD from my Xbox one X. I am still surprised about the automatic lossy compression that the QN90A is doing. When I use ARC on my Q9FN then the Xbox refuses to turn on Dolby Atmos since ARC does not support uncompressed or losslessly compressed Dolby Atmos. The only reason I think it works on the QN90A is because the Xbox is sending out a Dolby MAT signal, and the TV is then compressing it before passing it on to the AVR. I wish my Q9FN could do that, since I leave the Xbox connected to the TV so I can use VRR.
Thanks Dylan
Thanks for the quick follow up Dylan. I guess the only way to test it would be to send a 4K 120Hz 12-bit RGB signal, which to my knowledge none of the next gen consoles support. I used to be under the assumption that you needed 48 Gbps for 4K 120Hz with HDR10, because I saw each CTLE Channel on my LG 65SM9500 use 14.835 Gbps; which means all 3 combined would require about 45 Gbps:
link
But I must be misunderstanding something since the Xbox Series only supports 40 Gbps. I’m guessing the diagnostic screen is not showing the actual TMDS link.
Thanks Dylan
Not when I had the Xbox Series S connected. My new theory is that the Xbox SS is sending some kind of weird CEC signal that is disabling Local dimming, and also messes with ALLM, keeping the TV from switching out of game mode automatically. I was also trying different resolutions and refresh rates to see if the signal using Fixed Rate Link (FRL) or Transition-minimized differential signaling (TMDS) would disable local dimming. It did not make a difference on my PS5 or Xbox SS.
Thanks for the qualification Dylan
I can confirm that 4K at 120Hz works on my LG 65SM9500. I took some pictures of the HDMI diagnostics screen:
link
I was surprised to see full RGB at 10bit, in SDR and HDR. Sadly VRR doesn’t seem to work, at least from what I was able to test on my Xbox Series S. I can see the Hertz fluctuate in games when using 1080p/1440p@120 and 4K60, but the number doesn’t move when set to 4K120. At first I thought it might be an LFC issue, but even 120fps games like Ori and SW Squadrons stay at 119Hz when the Xbox is set to 4K. Not sure if this is a limitation of the TV or the console since the same thing happens on my Samsung Q900R.
One weird thing I noticed, that wasn’t mentioned in the RTINGS review is that Local Dimming is disabled and unavailable when receiving a 120hz signal. Or at least that’s what happens when I set my Xbox SS to 4K120. On my PS5 the Local Dimming setting isn’t greyed out at 120Hz. I wonder if it has something to do with the Xbox sending full RGB, and the PS5 only 4:2:2 at 4K120. Or maybe the TV thinks the Xbox is a PC and goes into monitor mode. Either way I am not complaining since I would recommend turning off local dimming in game mode anyway; or any mode at night time. I still can’t fathom why the algorithm is so atrocious on LG TVs. I have a Vizio P55-E1 which also has an IPS panel with a similar FALD Zone count and I never see this kind of blooming, or those slow zone transitions.
Let me know if there is anything else I can test, or if interested in a mini-review.
Not sure how to post pictures here, but I uploaded a picture of the Chroma 444 test image that I had opened up in my Xbox Series S’s web browser:
link
In person it looks fine, but the uploaded picture seems to be a bit compressed and doesn’t look right. Let me know if there is a better way to test 4:4:4 at 4K120 properly.
Thanks Adam
Thanks Adam
Fair enough. I wish Samsung was more transparent when it comes to model differences. Thanks Adam
Any chance you could buy and test the 32" frame, seeing that it has been heavily discounted? Maybe test it as a monitor like with the 48" CX, that way we could vote on it in the monitor section.
Thanks Adam
Thanks Adam
Thanks Adam
I also suspect that it’s a setting that Vizio just left in for no reason. Thanks for the quick reply Adam.
Thanks Marc