Originally Posted by stfn
I have similar setup, but OLED65B6P with NVidia GTX 1050. Windows Creator 64bit latest via fast ring with all updates and patches and Geforce driver ver. 381.65 from April 6 2017 - latest I can find. I too get HDR enabled in Windows settings and the TV does show the "HDR" logo in the upper right corner when switching from other sources to HDMI1 where I have my PC connected. But it's totally messed up - the contrast is waaay to high, to the point it's almost black and white, the colors look totally unnatural, video through Windows Media Player is very dark (both SDR and HDR) plus I get occasional flickers.
So, couple of questions:
1 How do you connect - directly from the VGA card to the TV (which port) or through AVR? If latter, which model? What HDMI cable and how long?
I have a cable directly to the tv, and another cable directly to the AVR. Like a dual monitor setup. Worked best for maintaining 4K @ 60Hz and 5.1 surround. The cable I used is a "HDMI.ORG CERTIFIED CABLE." Any one will do but that did it over any other cable for me. You can get the one I got here: a.co/cyzmaD9
2. Are you running 32 or 64 bit Windows -
64 bit of course.
3. What exact version is that "yesterdays latest driver" that you have and where did you download it from?
381.65 - Geforce.com or geforce experience.
4. What media player are you using to play your videos? Have you tried playing the LG demo HDR clips like the Chess Demo or NASA UHD demo?
I love the chess demo for testing HDR. Works great on the tv.
I use MPC-HC with MadVR, with HDR data set to passthrough to the tv. There are numerous posts about using MadVR and MPC-HC for the best quality video. So far it is also the only one giving me options for HDR, such as providing your own 3lut files for shading.
5. How do you know for sure videos are playing in BT2020? I do see an indication of HDR, but never about the color space
Now, how you know your stream is BT.2020 (The source files I use are BT2020 encoded, but any encode is fine, though BT2020 is the most popular it seems) is when you watch it with the system set to SDR, but the settings in the media player set to HDR passthrough. It will appear washed out.
6. What firmware version is your TV running?
7. Did you have to make any special settings other than the factory defaults in the TV? For example, is your deepcolor on or off?
UltraHD Deep Color is enabled, and must be enabled for HDR to work. This review has great notes on setting your tv. I followed this guide when tweaking. However when the tv goes into HDR mode most of these settings are not applicable in HDR mode to my knowledge:
Color gamut - wide
Is a 10-bit native panel
Supports DCI-p3 and Rec 2020
INTERPOLATION WILL REDUCE SCREEN JUDDER
Judder-free 24p Show Help : Yes
Judder-free 24p via 60p Show Help : No
Judder-free 24p via 60i Show Help : No
To play 24p source material without judder, you need to activate 'RealCinema' option under 'Setting'→'Picture options'. Although inconsistent, for 60p and 60i sources set 'Trumotion' to user and set 'De-Judder' and 'De-Blur' to 0 to remove judder. It wasn't consistent enough for us to consider a pass though.
4k @ 60Hz with chroma 4:4:4 and HDR - not supported, with other sources quoting supported. Not sure on this one.
HDR10 Show Help : Yes
Dolby Vision Show Help : Yes
5.1 Passthrough ARC Dolby Digital Show Help : Yes
5.1 Passthrough ARC DTS Show Help : Yes
5.1 Passthrough Optical Dolby Digital Show Help : Yes
5.1 Passthrough Optical DTS Show Help : Yes
HDMI 2.0 Full Bandwith : Yes
ARC : Yes (HDMI 2)
USB 3 : Yes (1)
HDCP 2.2 : Yes
CEC : Yes
MHL : No
Variable Analog Audio Out : No
Update 01/05/2017: With the newest firmware update (04.30.77) the input lag has been reduced across all resolutions. A 'HDR Game' picture mode has been added, and the input lag no longer cycles over time. The results above have been updated.
Update 02/07/2017: Note that in the 'HDR Game' picture mode there is some screen tearing in the bottom 1/4inch of the display. This does not affect the other picture modes.
Update 03/06/2017: Retested the B6 with the latest firmware update (04.31.10) and the screen tearing issue in 'HDR Game' picture mode is now fixed. Input lag remained the same as with the previous update
It would turn out that in order to watch SDR content, I do need to force windows to turn off HDR. Another interesting finding is that once you disable HDR, re-enabling it results in a washed out screen again. While fullscreen exclusive apps do not appear to be effected by this (Nvidia Control Panel quite correctly specifies the app controls the display settings), I did need to reboot in order for HDR to function semi-properly in windows. I think there is yet some tweaking left to do to get HDR to work properly with windows 10.
My conclusion: Enable HDR when watching HDR content full screen exclusively with MPC-HC and MadVR tweaked for HDR Passthrough.
Disable HDR for everything else, and reboot if the screen still seems washed out.
For gaming, it should work already.
NOTE: EXCLUSIVE FULLSCREEN means NOT borderless. Please google if you do not understand the difference.