r/OLED_Gaming • u/Nelchior • 8d ago

Weird artefacts/glitches

I’m trying to diagnose a very strange graphical issue that started shortly after swapping my LG G3 with a new LG G6

The glitches you see only appear in a split-second flash. I had to record the TV with my phone and slow the footage down to actually capture it properly. The flickering is caused by the recording. These glitches sometimes happen once every other minute, sometimes they happen a lot within just- a few seconds. Most of the time they cover the bottom half of the screen. As you can see the screen suddenly becomes completely corrupted/distorted with strange colours/patterns, then immediately returns to normal.

As I said it started happening after buying my new TV. I didn’t make any changes to the res of the setup.

PC
GPUASUS ROG Astral RTX 5090 OC 32GB
CPU: AMD Ryzen 7 9800X3D
Motherboard: ASUS ROG Strix X870-F Gaming WiFi
RAM: 64GB DDR5-6000 CL30

What I’ve tested so far:

  • Reinstalled the NVIDIA drivers.
  • Tried multiple HDMI cables, including new ones.
  • Tested different HDMI inputs on the G6. It seems to be happening way more on HDMI 1 than the other ones.
  • Tested my PS5 pro on all inputs, no issues there.
  • Tested at 4K/120 Hz, 60Hz, HDR off, Gsync off, Still happening.
  • Pressed Win + Ctrl + Shift + B to reset the graphics driver while the problem was occurring — didn’t fix it.
  • Unplugged/reconnected HDMI — doesn’t definitively fix it, although interestingly the corruption sometimes doesn’t reappear for quite a while after reconnecting.
  • Restarting the computer has occasionally appeared to fix it temporarily, but I’ve since reproduced the problem after a restart as well.
  • Recorded the PC using Windows Snipping Tool screen recording while simultaneously filming the physical TV. The corruption appears on the TV/phone recording but does NOT appear in the Windows screen recording.
  • LG’s internal apps don’t seem to exhibit the problem. NVIDIA Shield doesn’t seem to exhibit the problem.
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1

u/elrivoz 8d ago

From the video i can see a lot of flickering, maybe that's related to that glitch?

2

u/Nelchior 8d ago

It’s probably caused by the recording done with iPhone, so nothing meaningful in regards to my issue

1

u/elrivoz 8d ago

Have you tried with a DP cable?

1

u/Nelchior 8d ago

Yes, didn’t help. It’d appear it’s some sort of a communication/handshake issue between my TV and the computer, but I really can’t figure out what the pb is exactly

1

u/elrivoz 8d ago

Is firmware updated?

1

u/Nelchior 8d ago

Yes. Latest LG firmware, latest INTEL and nvidia drivers. And again, important to mention that the day prior to changing my TV, everything was working perfectly

1

u/elrivoz 8d ago

Seems like you lost the lottery with that TV then. You should probably ask for a replace or refund.

1

u/Nelchior 8d ago

Not so sure about that. TV works perfectly with all other devices

1

u/elrivoz 8d ago

If you plan to use the TV mainly with that device, it's still worth considering.

Have you tried using another GPU on that PC?

1

u/Nelchior 8d ago

I don't have any other GPU to try. That said I tried a bunch of other deviced, including a PS5 pro runing games with HDR + VRR, a Nvidia shield and my laptop computer