Question LG C1 brightness flickering

[eliau81]

Hi,
i got brightness flickering while playing some PC games with LG C1, when using g-sync.
does anybody know how to fix it?
RTX 3080 TI
4k@120Hz

 

[sizzling]

Is the TV firmware up to date? Some early version had issues with HDMI 2.1.

 

[eliau81]

Is the TV firmware up to date? Some early version had issues with HDMI 2.1.

yes it does
03.15.27

 

[sizzling]

Are you sure your HDMI cable is capable of running 2.1? There are many that claim to be 48Gbps but have issues with 4K 120Hz, I got caught by one and had to get another. Mine caused flicking on/off a black screen.

 

[eliau81]

yea, it is 2.1 100%
also tested with sony PS5 cable that is 100% 2.1
same problem

 

[sizzling]

yea, it is 2.1 100%
also tested with sony PS5 cable that is 100% 2.1
same problem

I'm out of ideas. It was firmware and cable that gave me trouble with my C9 & 3080

 

[eliau81]

ok thanks anyway