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Rmarrtyr

Input lag when HDR turned on

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Posted · Original PosterOP

So I just built a new gaming PC for the first time in about 10 years and everything is up and running and works great except for one thing.

 

I'm running through an LG 4K TV (43UH668V) and every time I switch on HDR gaming in Windows the mouse pointer starts to lag really badly. It's the same if I turn it off in Windows and on in-game.

 

There is zero lag with HDR off and I'm able to game in 4K no problem but I just spent all this money and I feel like my rig should be able to handle HDR! 

 

I've tried replacing the HDMI cable with a high speed one and switching it between all 3 HDMI ports on the TV but this makes no difference. I also updated the TV's firmware and GPU drivers to the latest version. I have a pretty shitty wireless mouse and keyboard (Logitech MK270) could this be the issue? 

 

Specs:

Ryzen 5 3600 Gigabyte RTX 2080 Super gaming OC 16GB DDR4 3600Mhz MSI B450m Mortar Max

 

Thanks in advance!

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The question is what kind of  HDMI inputs your tv has and what cable you got:
7lIGdS4.png

you are at the limmit of HDMI 2.0 with 4k 60hz Lckfcmn.png

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Posted · Original PosterOP
3 hours ago, Andiq said:

The question is what kind of  HDMI inputs your tv has and what cable you got:
7lIGdS4.png

you are at the limmit of HDMI 2.0 with 4k 60hz Lckfcmn.png

Thanks for your response. The HDMI ports are all 2.0a but even scaling down the resolution to 1280x720 and switching on HDR causes mouse lag.

 

I have an Nvidia Shield TV box plugged in to another HDMI port which displays 4K HDR although I'm unsure of the refresh rate.

 

 

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Posted · Original PosterOP
30 minutes ago, Andiq said:

Is it just the mouse laaging or are your fps low ?

Just ran Doom Eternal, it doesn't seem to affect FPS. 4K/60fps is maintained with HDR on or off (FPS counter switched on).

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