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
06-11-2020 01:56 AM
For all you fellows who have ghosting (especially of the purple kind), maybe go on this thread and write down your experience (with videos if you have them) in detail. Who knows, maaaaaaaybe someone will notice....
07-11-2020 02:46 PM
New firmware update on the US site: https://www.samsung.com/us/support/owners/product/qled-tv-q90t-2020
07-11-2020 02:52 PM
I'm in Europe so I'll have to wait to see what it does, but there's a lot to solve for this patch to be the miracle we're waiting for. Between the flickering issues, the VRR issues, the ghosting issues, the contrast issues in Game Mode, the DSE and the scanlines issues, I'm not very confident Samsung will have done all they could to solve everything. Fingers crossed...
07-11-2020 03:07 PM
DSE won't be solved, that's a hardware/panel issue. But the rest can be solved via software updates.
07-11-2020 07:18 PM
Soooo... watching HDR movie on Prime and it dimmed after 6mins 40secs or so... did this bug ever actually get fixed? Have I just been missing it?
07-11-2020 07:29 PM
Only in game mode.
07-11-2020 07:30 PM
This is on filmmaker mode. First time I’ve saw it happen there. Hoping it’s a one off and not a NEW dimming bug.
08-11-2020 10:14 AM
I'm hearing over on the AVSForum that the latest update has improved local dimming and game mode no longer looks washed out.
08-11-2020 11:13 AM
Yes you're right. Dimming happens in movie mode on YouTube. Hard to notice very mild Dimming
08-11-2020 03:28 PM