LG CX gradient bad at 1440p@120hz

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deama
Posts: 370
Joined: 07 Aug 2019, 12:00

LG CX gradient bad at 1440p@120hz

Post by deama » 14 Aug 2020, 12:07

I got a LG CX and after hooking it up, realised that at 1440p@120hz it gives me a decent clear image, but the gradient is screwed up, essentially I can see blocks of colours rather than a smooth transition. However if I enable smooth gradients, then the 1440p@120hz resolution becomes blurry.
I assume this is due to the bandwidth not being enough, is that true?
I have a 2060 super, and am using a 2m long hdmi cable, would a shorter cable fix the issue?

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AddictFPS
Posts: 314
Joined: 15 Jan 2020, 14:13

Re: LG CX gradient bad at 1440p@120hz

Post by AddictFPS » 15 Aug 2020, 05:50

https://community.acer.com/en/discussio ... u-hdmi-2-0

Even with max quality cable, sadly seems that 2.0 only can do it with color compression 4:2:2 , and this cause bad color gradients and contrast.

RTX 30 series with HDMI v2.1 is a must be for enjoy max image quality on your amazing OLED TV

Another cause adding blurriness would be a bad scaling quality in this TV. You can try go to Nvidia Control Panel, change scale source from Screen to GPU, and select the prefered behavior, fullscreen maintain aspect ratio, or 1:1 with black bands at 4 sides. With 1:1 signal is not scaled, so no blurring interpolation artifacts.

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