[SOLVED] Shadows from HDR

[cordeirooo]

I've been getting strange shadows beside boxes in certain websites and softwares (Discord) as you can see in the images below.
What's stranger is that they go away if:

• I plug-in a second monitor with HDR on;
• Disable HDR.

It's possible this is a VGA problem (and hopefully it is) not a display issue, since I haven't noticed any problems when using the TV's apps or while playing Switch.
Since I don't see the shadows in the screenshot, I'm not sure the VGA theory holds true, though.

Monitor is a LG 65UN7310PSC, using 2.1HDMI cable and a Sapphire Nitro+ RX 580 .

EDIT: Weird, images were not appearing.

 

[cordeirooo]

Fixed the images' links!

 

[Joseph_138]

It's possible your monitor may only be partially HDR compatible, and is doing what it can to display an HDR image, but just doesn't have all the resources it needs to do the job right. For some monitors with a very low level of compatibility, you may be better off not trying to use HDR at all. I have an LG 32UN550-W, and that falls short of HDR 400 in several areas, but still looks better than a monitor that doesn't support HDR at all.

At 65 inches, this sounds more like a TV than a monitor. HDR TV's usually have much better coverage of the HDR specifications than many monitors. Are you sure this isn't screen burn?

 

[cordeirooo]

Can't be, because it replicates the image to the left, it's not permanent. And when using the TV's apps, I get no shadows.
I'll replace cables and test another video card just to err on the safe side.

 

[cordeirooo]

So, I found out the reason: noise reduction.
It's one of the options from the TV that caused it.

Hope it helps someone eventually!