This is a common complain when folk use HDTVs as monitors. The HDTV is optimized for video content and not your static screens you get from a PC.
As to why the answer is simple. Costs.
If you look at the cost of large monitors say at https://www.barco.com/en/Products/Displays-monitors-workstations you see why folk try HDTVs as displays.
I am using the LG OLED65B6P as a PC monitor via HDMI (input 2). I have been experiencing an issue where switching between a screen with darker colors/blacks and a screen that's mostly white (such as this one) causes the both the color intensity and whites/light grays to wash out. The change isn't extreme, but it's annoyingly noticeable. It is most prominent, for example, in the address bar of Chrome and in the Windows 10 search bar and colors in taskbar icons. When I come to a page like this, everything looks washed and seems to have poor contrast. When I return to a darker screen, everything looks very nice.
The problem is, it doesn't seem to be related to any settings that I can find. I have tried changing the input icon from HDMI to PC. I have tried various preset picture modes. I also have tried using RTINGS settings, default settings, calibration using Windows (changing the options on TV, not PC) and Lagom's calibration. Further, I have tried all the available black levels, turning contrast, power saving, motion, and other enhancements on/off (such as adaptive backlights). Furthermore, I have tried altering NVIDIA settings, or restoring defaults. The change in contrast/brightness and color worsens . Since my current PC settings are the same as they were with my old TV, it leads me to believe it's an issue with the device or some hidden setting. Moreover, I figure if it were PC settings changing, this would appear in screenshots; however, the colors/contrast in both screenshots looks the same on other devices.
Has anyone else experienced this problem? If so, what was your solution? Since I am a chord cutter and my primary purpose of the TV is for our livingroom PC, this isn't something I can easily ignore.
Thank you in advance if you've read this far.
My current settings
HDMI ULTRA HD Deep Color - On
Home/Store Mode - Home Mode
Smart Picture Mode - Off
Picture Mode - ISF Expert (Dark Room)
Aspect Ratio - Original
Energy Saving - Off
Eye Comfort Mode - Off
OLED LIGHT - 40
Contrast - 100
Brightness - 50
H/V Sharpness - 0
Color - 50
Tint - 0
Dynamic Contrast (the one I thought would be the culprit, given the description: "Optimize Contrast settings based on image brightness.") - Off
Super Resolution - Off
Color Gamut - Normal
Edge Enhancer - Off
Color Filter - Off
Gamma - 2.2
Color Temperature - Warm2
Method - 2 Points
Pattern - Outer
Point - Low
Red - 0
Green - -5
Blue - 1
Color Management - All Default
Noise Reduction - Off
MPEG Noise Reduction - Off
Black Level - High (have tried Low and Auto as well)
Real Cinema - Off
Motion Eye Care - Off
TruMotion - Off
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