10-05-2020 11:59 PM - last edited 05-08-2020 05:09 PM
I bought a Q80T a couple of days ago and have noticed a really annoying issue when using the tv with the combination of HDR and game mode.
I'm fairly certain this is a software bug in the TV since I can reproduce this issue with 100% accuracy, and it happens on the dot at the same moment every time. It's basically on a timer.
Basically when the game is displaying a HDR signal and game mode is enabled, exactly after 6 minutes the brightness of the TV suddenly drops by around 20 (50 -> 30). The value of brightness setting doesn't actually change however. Messing with the brightness setting does not restore the brightness to it's original state, but changing the local dimming setting from standard to low and then back to standard does. Switching game mode off and then back on also fixes the issue, but then it happens again EXACTLY after 6 minutes (I've timed this with a stopwatch).
Has anyone else experienced this issue? Or can someone maybe test this on their TV to see if you can reproduce it?
Exact repro steps on how I can reproduce this 100% of the time on the PS4 Pro:
Some other notes: The PS4 has a screensaver that basically dims the screen if it is idle for a while. This is not the cause of this, this happens even when the console is in active use and the brightness can be restored temporarily by changing the local dimming setting like described above. I have not managed to reproduce this issue with game mode off, so it seems to be related to game mode.
Software version: 1304
31-08-2020 07:48 PM - last edited 31-08-2020 07:50 PM
Where did u hear that with freesync, local dimming not working is normal? and that im supposed to watch a grey washed out image?..no way.if that was true,samsung must have told it in specs or i wouldnt have bought this tv
31-08-2020 08:57 PM
Yes have read somewhere. That is the reason sony is not implementing vrr. Either the display can focus on local dimming or rapidly changing refresh rate within milliseconds.
31-08-2020 09:21 PM
I’ve seen people testing VRR on the Q90T, not seeing a noticeable dimming decrease while doing so.
01-09-2020 02:33 AM
Is this the bug we're talking about? The image is washed out on Q80T on game mode
https://www.youtube.com/watch?v=2DaZE_VGytQ&feature=youtu.be&t=652
I'm planning to get it but this completely put me off
01-09-2020 08:13 AM
Nice! I did write over a week ago that they are aware of the problem. I work in game development so I had some contacts I could reach out to.
01-09-2020 05:41 PM
No, you are just showing a TV with low amount of local dimming zones, I don't have this issue on the Q800T.
01-09-2020 06:01 PM
Man, my xbox one x with vrr its a beast on my q95t! First i had ghosting but with vrr on its gone.
01-09-2020 07:57 PM
On the PC it's the same. The Local Dimming does not work if Game Motion Plus is disabled. Which sucks because I hate GMP, there is a lot of ghosting, green, yellow and purple. This is a problem that came with update 1304 and I'm not seeing anyone complaining that it NEEDS to be fixed.
01-09-2020 08:01 PM
No. This is a problem that came with update 1304. Before the update, this did not exist. Local dimming is only functional if GMP is enabled and before the update this did not happen.
01-09-2020 08:03 PM
I havent noticed that on my Q95T