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LG CX gaming/PC monitor recommended settings
These are my recommended settings based on recommendations from rtings.com review, HDTVTest, users at AVSForum and here, and personal experience. Settings not described are left at default. If you want to run test patterns yourself, you can download the Mehanik HDR10 Calibration and Test Pattern Set.
LG CX secret menus:
HDMI Diagnostics: Highlight Channel Tuning and press 11111. Displays detailed information on current input.
FreeSync Information: Press Green button 7 times. Displays current VRR/FreeSync status, resolution/refresh rate, color space, chroma sampling, and data rate.
HDMI Signaling Override: Highlight Picture Mode Settings and press 1113111. Allows modification of various settings.
If want to see status of current bugs with LG CX, please go to LG CX Bug Megathread.
LG CX SETTINGS FOR PC & CONSOLES
I recommend turning the screen off when not in use to allow the Pixel Refresher to run automatically. It will not run if screen goes into Standby.
Home Dashboard: Set HDMI input label to PC [Required for full chroma RGB/444. Navigate to Edit in upper right under user name and select the HDMI icon on your input to change it to a PC. Rename the input to your preference. This will reset if you disconnect your HDMI cable.]
Energy Saving: Off
Additional Settings
Eye Comfort Mode: Off
HDMI Ultra Deep Color: On
Instant Game Response: On [Enables VRR/Gsync Compatible and ALLM.]
AMD FreeSync Premium: Off [Prevents Dolby Vision. Turn On if using AMD HDMI 2.0 GPU as these do not support VRR.]
OLED Screen Saver
Screen Shift: On [Personal preference. If want to turn it off, must also disable Quick Start+ to avoid Screen Shift turning back on automatically.]
Logo Luminance Adjustment: Low
Picture Mode (SDR / HDR10 / DV): Game / Game / Game
OLED Light: 20-80 / 100 / 100
OLED Light in SDR can be adjusted per personal preference/lighting conditions, but the higher you set it, the higher risk of temporary image retention, brightness degradation, and burn-in. Rtings measured peak SDR luminance at approximately 460 nits. Thus, using an approximate peak luminance of 500 nits, if you want to target 100 nits, which is SDR video mastering luminance, then you would need to set OLED around 20. However, this may appear too dim for routine PC use. 80 is LG recommended value for isf Expert Bright and Game modes. 60 is LG recommended value for isf Expert Dark. I personally use 30 for SDR in a very dark room.
Contrast: 85 / 100 / 100
Brightness: 50 / 50 / 50
Sharpness: 0 / 0 / 0
Color: 50 / 50 / 50
Color Temperature: Warm2 / Warm2 / Warm2 [Warm2 is most color accurate. I personally prefer Warm1 for PC use.]
Gamma: 2.2 / - / -
Black Level: Low / Low / Low [Multiple experts claim LG calibrates to Low.]
DTM: - / HGiG or Off / -
Enable HGiG for (1) Windows 10 when playing games supporting HGiG, (2) Xbox at all times, or (3) PS4/5 when playing games supporting HGiG. HGiG will cause color clipping if enabled on Windows 10 desktop and in unsupported games. I have seen recommendation to set HDMI Mastering Peak to 1000 in HDMI Signaling Override menu but I can't see any difference.
Enable DTM if you prefer a brighter image at cost of color clipping.
General Settings
AI Brightness Control: Off
Home Auto Launch: Off [Prevents app bar showing up every time you turn on screen.]
No Signal Image: Off [Prevents displaying Gallery pictures when signal input is lost.]
Live Plus: Off
Quick Start+: On
Sound Settings
eARC (HDMI 2)
Sound Out: HDMI ARC
AV Sync Adjustment: Bypass
HDMI Input Audio Format: Bitstream
Digital Sound Out: Pass Through [Note that DTS:X will NOT pass through as LG abandoned DTS license on CX.]
eARC: On
WINDOWS 10 SETTINGS
ClearType: Off [Minimizes rainbow text fringing/color bleed, which will be an issue due to WRGB subpixel structure differing from RGB Windows is expecting. You will have some pixelated text in legacy areas of Windows interface.]
Personalization Settings
Set background to solid color Black
Set color theme Dark
Set screen saver to Blank after 1 minute
Auto hide taskbar
Power and Sleep Settings
Turn screen off after 10 minutes [Personal preference]
Power plan: (AMD Ryzen) Balanced
Display Settings
HDR: On [Windows 10 games have inconsistent automatic toggling of HDR.]
Set "HDR/SDR brightness balance" to 1/3 (i.e., 33%) of SDR OLED Light value chosen above to equalize SDR brightness between modes.
Windows 10 maps HDR peak brightness to 1499 nits and rtings tested peak SDR brightness at approximately 460 nits. So, using an approximate peak brightness of 500 nits for SDR and 1500 nits for HDR, set HDR/SDR brightness balance to 7-27% to target SDR OLED Light 20-80 = 100-400 nits.
Scaling: 150%
Hardware-accelerated GPU scheduling: On
VRR: On
Sound Settings
Speakers
Enable 5.1, 7.1, or Dolby Atmos for Home Theater [Choose per owned licenses and preference.]
Headphones
Enable Windows Sonic/Dolby Atmos/DTS:X for Headphones [Choose per owned licenses and preference.]
If can't Enable Dolby Atmos/DTS:X for Headphones, try changing headphone driver to USB Audio Device [Device Manager > Sound, video and game controllers > Headphone device > Update driver > Browse... > Let me pick... > USB Audio Device]
NVIDIA CONTROL PANEL SETTINGS
Display
Resolution: 3840x2160 [Under PC section if using HDMI 2.1 GPU. Under Ultra HD/HD/SD section if using HDMI 2.0 GPU.]
Refresh rate: 120 Hz [60 Hz if using HDMI 2.0 GPU]
Output color depth: 10 bpc [8 bpc if using HDMI 2.0 GPU.]
Output color format: RGB
Output dynamic range: Limited
Digital vibrance: 50% [Changing this will alter gamma and color contrast significantly.]
Scaling: Integer scaling [Personal preference.]
G-sync: Enable G-sync/G-sync compatible for full screen mode only
3D Settings
Image sharpening: sharpen 0.50, ignore film grain 0.17, GPU scaling - Off [GPU scaling On will prevent you from selecting 1080p120/1440p120 under PC resolution]
Ambient occlusion: Performance
Anisotropic filtering: Application
Antialiasing: FXAA - Off, Gamma correction - On, Mode - Application, Transparency - Off
CUDA GPUs: all
DSR Factors: Off
Low Latency Mode: Ultra
Max Frame Rate: 117 FPS [Same for in-game FPS limiters]
Monitor Technology: G-sync Compatible
MFAA: Off
OpenGL rendering GPU: Auto
Power management mode: Optimal Power or Prefer maximum performance [Personal preference.]
Preferred refresh rate: Highest available
Shader cache: On
Texture filtering: Anisotropic sample optimization - On, Negative LOD Bias - Allow, Quality - High Performance, Trilinear optimization - On
Threaded optimization: Auto
Triple buffering: Off
Vertical sync: On [In-game Vsync Off]
Virtual Reality: Pre-rendered frames - 1, VRSS - Adaptive
AMD ADRENALIN SETTINGS (TBD)
I do not have an AMD GPU. If anyone can provide a list of preferred settings, it would bey very appreciated.
XBOX ONE X/SERIES X SETTINGS
LG CX Settings important points (see above)
Change input to PC
HDR10 Game mode: Enable HGiG
TV & Display Options
Resolution: 4k UHD
Refresh rate: 120 Hz [XSX] or 60 Hz [XOX]
Allow 50 Hz: Yes
Allow 24 Hz: Yes
Allow ALLM: Yes
Allow VRR: Yes
Allow YCC 422: No [If On, caps to 422 8-bit.]
Allow 4k: Yes
Allow HDR10: Yes
Allow Dolby Vision: Yes
Color Depth: 10-bit
Color Space: Standard [RGB Limited]
PS5/PS4 PRO SETTINGS
I do not own this, so please point out any particularities you think are missing.
LG CX Settings important points (see above)
Change input to PC
HDR10 Game mode: Enable HGiG for supported games
Video Output Settings
Resolution: 2160p
4K Video Transfer Rate: Auto
HDR: On
Deep Color Output: Auto
RGB Range: Limited/Low
SWITCH SETTINGS
TV Settings
TV Resolution: 1080p
RGB Range: Limited
Screen Burn-in Reduction: On
LG CX VIDEO SETTINGS (WebOS, Streaming device, UHD Blu-Ray Player)
SDR
Picture Mode: isf Expert Dark/Bright [Most color accurate. Choose based on viewing conditions, as they only differ by their luminance.]
Contrast: 90
Sharpness: 0
Gamma: 2.2
Peak Brightness: Off/Low/Medium/High [Increases SDR Luminance. Use a higher setting the more light there is in your room.]
TruMotion: Smooth [Select this if want to completely remove judder.]
HDR10
Picture Mode: Cinema
DTM: Off [On if want brighter picture at cost of some color clipping.]
Dolby Vision
Picture Mode: Cinema Home [Cinema more color accurate but more likely to experience raised blacks/near black artifacts and do not get true DV IQ.]
Brightness: 50 [49 if experiencing raised blacks.]
AI Brightness Control: On [Enables DV IQ.]