LG OLED C1/C2 VRR Flicker in Dark Games: Diagnose and Reduce It

Identify flicker before changing settings

Dark-gray areas pulsing while the HDMI connection stays active can be VRR near-black luminance fluctuation. Full blackouts, colored artifacts or reconnect sounds need HDMI/G-SYNC signal diagnosis. A cable change may help a failing link but will not normally correct brightness pulsing with a stable signal.

Changing frame intervals can alter the appearance of near-black tones. Frame-time spikes and transitions around low-frame-rate compensation (LFC) can make the effect more visible. LFC behavior depends on the source and supported range; do not assume one threshold for every console and PC.

Establish a reproducible scene

Use the same dark save point and one loading sequence. Record model suffix, firmware, source, resolution, refresh, HDR and picture mode. On PC, record GPU driver and G-SYNC/FreeSync state. On consoles, confirm the game's VRR support and actual output status. Configure HDR first and keep it unchanged during the timing comparison.

Compare fixed refresh

Disable VRR and replay at a supported fixed 60 or 120 Hz, keeping resolution and HDR unchanged. If pulsing disappears without a reconnect, variable timing is a useful lead. If it remains, investigate the game's HDR processing, source video enhancements or other dimming behavior instead.

Separate loading-only flicker from ordinary gameplay. A brief unstable loading screen should not determine settings for an otherwise smooth game.

Stabilize frame delivery

1. On PC, inspect a frame-time graph for spikes during flicker. Temporarily close capture tools or overlays that affect presentation.
2. Use one reliable in-game or driver limiter where available. Choose a sustainable target with appropriate headroom below the refresh ceiling, not a universal copied number.
3. Reduce settings responsible for large swings. CPU load, shader compilation and asset streaming can matter even with a powerful GPU.
4. If performance repeatedly crosses the effective lower VRR boundary, try a steadier target, a lower workload or fixed refresh. On consoles, compare available quality/performance modes; PC limiter instructions may not apply.
5. Record stable public game, driver and TV updates, then replay the same scene. An update can improve pacing without eliminating OLED near-black flicker.

Limits and picture controls

C1/G1 and C2/G2 differ in menus and firmware. Visibility also varies by panel, size, room and game; do not promise that every C2 or firmware version eliminates the effect.

Start Black Stabilizer and Fine Tune Dark Areas at neutral. Where Fine Tune Dark Areas is available, a small adjustment can make a shift less conspicuous, but may alter shadows. Check a trusted black-level pattern and real content; undo it if detail disappears or blacks lift. It cannot stabilize rendering. HGiG and Dynamic Tone Mapping likewise do not fix frame pacing.

Do not use service-menu protection changes or Pixel Cleaning for a timing problem. Seek support if blackouts persist without VRR, internal menus corrupt, or a port fails across known-good direct sources.

Decide whether to keep VRR

If stable frame delivery still leaves objectionable flicker, fixed refresh is a legitimate per-title choice. Use the VRR on/off decision guide to compare motion, tearing and input feel before saving it.

Sources

• HDMI Licensing Administrator — Variable Refresh Rate
• NVIDIA — Set up G-SYNC
• RTINGS — LG C2 OLED review and VRR measurements
• Blur Busters — G-SYNC settings and frame-rate ceiling behavior