G-sync Flicker Problem !

[pilgrimage]

Hi, LG49NANO866 Games may flicker when G-sync is enabled. Is there any way to reduce or remove Flickering with G-sync enabled? If so, how can I do it exactly?

I’m using my 49Nana866 tv 4k 120hz 4.2.0 8 bit.

I noticed that 4K and 1440p doing flickering at 120hz. But when I get 4k 60hz, the flickering doesn’t happen when g-sync is active. Frankly, I don’t know what to do. MY LG Firmware version 3.10.11

[Chief Blur Buster]

Hi, LG49NANO866 Games may flicker when G-sync is enabled. Is there any way to reduce or remove Flickering with G-sync enabled? If so, how can I do it exactly?

Are you talking about minor flicker (like 1% brightness changes) or major blackout flicker (going black for a moment)?

Major Flicker
Usually caused by firmware bugs or driver bugs. Try lower framerate caps such as a 99fps cap (there's a firmware bug on one LG model at the moment)

Faint / Minor Flicker
For minor flicker, flicker is caused by sudden framerate changes. Different framerates have different refresh rates which /occasionally/ has slightly different colors (for various reasons, such as GtGtime:refreshtime (frametime) ratios, as well as LCD pixel decay, etc). Usually like about 1% brightness difference. Which causes the visible flicker when framerates /suddenly/ change.

To minimize this, you want to adjust to minimum framerate gyrations:
- Game settings (less stuttery settisngs)
- Game on SSD (less diskload stutter)
- GPU upgrade (keep GPU fast)
- Framerate cap (cap at something like 117fps below 120Hz)
- Keep framerates well inside LFC range or well above LFC range. You don't want framerates wildly gyrating into and out of LFC range, since the transition-into-LFC and transition-out-of-LFC can be a cause of flicker.

Also, your display is FreeSync (aka G-SYNC Compatible), which can sometimes have more flicker than G-SYNC Premium since NVIDIA's G-SYNC tuning for flicker-related matters, can on average be better.

The VRR universe is full of subtle behaviors that needs to be improved by the multiple manufacturers;

[pilgrimage]

What is the LFC? How can I set the LFC interval?

If the G-sync range you are saying is LG49nano866 40-120hz VRR range.


Thankyou for support.

[RealNC]

What is the LFC? How can I set the LFC interval?

If the G-sync range you are saying is LG49nano866 40-120hz VRR range.

In this case it means make sure you don't go near 40FPS. LFC will make the monitor jump from 40Hz to 80Hz. This can cause flicker with some monitors.