Question HDMI Monitor to TV flickering

[Vetrix1996]

My monitor works fine when i turn it on without changing display, but when i switch display from TV to monitor it flickers non stop and never stabilizes. I just got a new GPU the 4090, i have a LG CX. The TV doesn't flicker at all its just the computer monitor, never had the problem on my old 3090 GPU. All the settings are correct in display settings as far as i can tell and i have reinstalled drivers but nothing works. Any advice? The HDMI cable and GPU are brand new.

This is the cable:
https://truehq.co.uk/products/ultra-high-speed-hdmi-cable-2-1-certified-2m-by-true-hq

This is the GPU:
https://www.zotac.com/gb/product/graphics_card/zotac-gaming-geforce-rtx-4090-amp-extreme-airo-0

This is the monitor:
https://rog.asus.com/uk/monitors/27-to-31-5-inches/rog-swift-pg278qe-model/spec/

And the TV is the LG CX.

 

[Lutfij]

Please list them like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model.

I just got a new GPU the 4090, i have a LG CX. The TV doesn't flicker at all its just the computer monitor, never had the problem on my old 3090 GPU.
Did you use DDU to rid your platform of GPU drivers prior to replacing the RTX3090 with an RTX4090? If not, use DDU to rid your platform of all GPU drivers(even non NVidia drivers) and then manually reinstall with the latest drivers sourced from Nvidia's support site in an elevated command, i.e, Right click installer>Run as Adminsitrator.

 

[Vetrix1996]

Please list them like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model.

I just got a new GPU the 4090, i have a LG CX. The TV doesn't flicker at all its just the computer monitor, never had the problem on my old 3090 GPU.
Did you use DDU to rid your platform of GPU drivers prior to replacing the RTX3090 with an RTX4090? If not, use DDU to rid your platform of all GPU drivers(even non NVidia drivers) and then manually reinstall with the latest drivers sourced from Nvidia's support site in an elevated command, i.e, Right click installer>Run as Adminsitrator.

Ok ill try that

CPU: 11900K
Motherboard: TUF Gaming Z590
Ram: 32GB C16 3600mhz
GPU: 4090
SSD: 980 Pro 2TB + 870 EVO 4TB
PSU: 1600i Corsair
Case: H500M
OS: Win 10
Monitor: PG278QE