MLH012222

Thanks rtings for updating the input lag results!

4k @ 120hz with VRR is like 7.x ms, that’s a nice improvement, and makes a lot of sense now.

The 4k @ 120hz input lag values are great!

I can confirm with the Xbox Series X I am running 4k @ 120hz with VRR enabled on HDMI port 4. I’m playing warzone in 4k and I’m seeing the hz values fluctuate between 100-120, keeping in sync with the frame rates being produced by the Xbox.

It works! And its beautiful!

The input lag results have been updated yesterday with 4k @ 120hz values! Woot!

Its updated!

Hey they just updated the review with 4K @ 120hz values, they look good!

Same issue here. Everything looks kind of washed out. Warzone looks so much better on my xbox and Samsung Q80T, color-wise.

Jul 16, 2020 08:03 AM By rkneeshaw

16

I was able to use 1440p @ 120hz on HDMI 1-3 but not HDMI 4, with my Xbox One X. You may want to try HDMI 1-3.

This appears to be fixed with the latest firmware version 1401.2. I am now running 1440p @ 120hz on HDMI 4 (I used to only be able to do it on HDMI 1-3)

There’s a new firmware version out, 1402.1, dated Sept 29, 2020. But I dont see any release notes on it. The notes I can find say version 1301.5 (the previous version).

I think RTings is still trying to get their hands on a new nvidia card to test high bandwidth stuff like 4k@120hz with VRR. I wonder if this firmware version will help change any of the test results for input lag?

Aug 25, 2020 05:45 PM By Crankvolt

0

Don’t buy Samsung. All the new QLED panels had a dimming issue while in Game mode https://eu.community.samsung.com/t5/tv/2020-qled-t-models-q80t-q90t-q800t-q900t-hdr-game-mode/td-p/1731476

I have not experienced this with my Q80T, and have been enjoying it for gaming quite a bit. I’m using an Xbox One X set at 1440p output at 120hz. I chose 1440 over 4k because until we get HDMI 2.1 on xbox the 4k will only output at 60hz and its 10ms of input lag vs 5ms of input lag at 120hz.

Worth noting the xbox does not seem to output HDR at any resolution other than 4k. But even when I was playing at 4k with HDR I did not have the dimming issue. maybe its a PS4 issue.

I play with VRR disabled on xbox one x, and with game mode on on the Samsung Q80T.

I’ve found VRR only actually is used if you are using 4k resolutions also. Meaning, I can’t use VRR if I run 1080p or 1440p.

Because the input lag is lowest at 120hz refresh rates, I’ve disabled 4k and VRR on xbox one X and am running 1080p @ 120hz. I’ll wait until xbox series x and its HDMI 2.1 capability to run 4k @ 120hz and hopefully still have ultra low input lag. We will have to wait and see how this tests out.

And also FYI because you’re an xbox user for some reason 1440p @ 120hz does not work on the Q80T if you are using HDMI 4, but it will work if you use the other HDMI ports.

Current firmware is 1301.5 released June 22, 2020, from what I see: https://www.samsung.com/us/support/owners/product/qled-tv-q80t-2020

@rkneeshaw, that’s not an accurate comparison, as the VRR input lag is always measured at the max refresh rate supported by that resolution. So the 1080p and 1440p input lags you’re comparing aren’t at the same refresh rate.

Ah, got it, ok that makes sense then.

I’d argue its more of an equal comparison if you compare the effects of VRR across all resolutions at the same refresh rate.

So using review data: 1080p@60: 10.1ms, which goes down to 6.4ms with VRR 1440p@60: 9.8ms, which goes down to 7.2ms with VRR 4K@60: 9.8ms, which goes up to 15.7ms with VRR

Its odd.

Jul 21, 2020 02:33 AM By KindOldRaven

60

However something’s weird with the QxxTs though: Game Mode is overly-bright (like, gamma-wise) but the second you enable freesync and send a VRR signal: the image is a LOT darker again.

I noticed with the xbox one x that VRR is only actually used if the resolution is set to 4k (based on re-selecting the source on the Q80T which displays the resolution and refresh rate in the top right corner for a few seconds). Same with HDR.

On 1080p and 1440p resolutions, even though the xbox has “Allow Variable Frame Rate” enabled, the TV never gets it. It stays at the fixed refresh rate, and HDR is not used.

When 4k is enabled, VRR is enabled and HDR is enabled. I can tell the image appears darker (better) when HDR is in use. I’ve seen this on both Call of Duty Modern Warfare and Gears 5, both games that support 4k HDR.

I am currently playing on 1080p @ 120hz fixed, because that is the lowest input lag of about 5ms. I would like to go to 4k with VRR and HDR if the input lag would stay below 10ms, because the visuals are stunning. With a FPS like Call of Duty Modern Warfare I do notice a difference between the 15ms and 5ms input lag, my shots hit right during fast action sequences when running at the lower input lag and my overall playing performance and reaction times are much better. I hope the input lag at 4k with VRR improves with either a firmware update or when using an HDMI 2.1 source like the Xbox Series X, it doesnt seem right that it would be that much worse on the higher resolution on a 120hz native box like the Q80T.

There is a newer firmware version out as of June 22, 2020, version 1301. I wonder if RTINGS could retest this set on this newer firmware version.

Looks like this was updated, looks like 9.9ms to me.

I was able to use 1440p @ 120hz on HDMI 1-3 but not HDMI 4, with my Xbox One X. You may want to try HDMI 1-3.