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
15-07-2020 12:13 PM
15-07-2020 12:14 PM
Thankfully we have taken it to a mod ( @AntS ) and he has told Samsung about the issue and as far as I know they are working on a fix and they have a link to this thread. So please feel free to detail your issues for them to see!
15-07-2020 03:08 PM
I was so excited they had enabled the local dimming. Glad I didn't pull the trigger and bought the Q90T. Hope they fix this soon. Such a sad state of affairs.
15-07-2020 04:04 PM
15-07-2020 04:06 PM
It fixed "inverse ghosting" apparently. Which was an issue with shadows. But it didn't fix this global dimming/brightness issue. That (I hope) is coming soon!
15-07-2020 04:37 PM
16-07-2020 08:55 AM
It happens in all modes not only in Game Mode,
Try playing in Movie Mode or Film Maker mode for example in SDR, the screen dims down after a few minutes.
16-07-2020 03:02 PM
16-07-2020 10:51 PM
17-07-2020 05:37 AM - last edited 17-07-2020 05:39 AM
OMG! people are struggling to get updates for 2018 models and we're all with 2020 models think we have to wait 2more years lol. better to return it quickly and move to lg cx