Question 4K 60fps HDR stutter

[tsibosp]

Hello everyone! Just yesterday i got an LG C9 and I got it hooked up with my PC on a full hdmi 2.1 48gbps HDMI cable. It's an i5-6600k 4,2Gz, 16gb DDR4 RAM, GTX1080. I changed the HDMI slot to the PC indication on the TV and have HDR ON Windows 10 settings with 4:2:2 10-bit color enabled. Problem is when I open Chrome (with hardware acceleration enabled) on Youtube and i try to watch a 4k 60fps HDR video CPU is constantly on 100% usage and the video stutters and has frame drops. Any thoughts on whats wrong as I think the PC is capable enough to run this?

 

[helpstar]

Your GTX1080 "only" provides HDMI2.0b, could be a problem, it´s technically possible to use HDR with it but not officially supported.
Not sure about the color thing "4:2:2 10-bit color enabled "

update windows 10

The video has to support the HEVC codec of the card

Use DDU uninstaller and reinstall the latest driver from nvidia.com for the GTX1080

update the firmware of the TV

use a different browser like the new Microsoft EDGE

 

[tsibosp]

Your GTX1080 "only" provides HDMI2.0b, could be a problem, it´s technically possible to use HDR with it but not officially supported.
Not sure about the color thing "4:2:2 10-bit color enabled "

update windows 10

The video has to support the HEVC codec of the card

Use DDU uninstaller and reinstall the latest driver from nvidia.com for the GTX1080

update the firmware of the TV

use a different browser like the new Microsoft EDGE

Hello thanks for your input. Everything is updated. Gpu drivers, tv firmware and Windows 10 all up to date. I can see content in HDR in movies, shows etc with VLC and HDR mode enabled through Windows 10 settings. I just cant stream this specific youtube content, 4k-60fps-HDR with my pc and it seemed quite odd. Same exact thing happened with Microsoft Edge.

 

[helpstar]

try streaming it with VLC

Which youtube video is it? Please post the link to it

 

[tsibosp]

try streaming it with VLC

Which youtube video is it? Please post the link to it

It's not one specific video, CPU goes 100% and then it stutters in all HDR 4k 60 fps videos, I tried 3-4 of themm same result. One of those is :

View: https/www.youtube.com/watch?v=mkggXE5e2yk&t=3s

Again this only happens when I use C9 as a monitor in PC mode and try to watch it through the browser.

 

[helpstar]

Did you try it with VLC? copy the youtube link and paste it to the latest VLC player

Did you try it with the youtube app on the TV istelf without using the PC?

What´s your internet connection speed?