LG C1 - Flashing red pixels in black background, G-sync on/off fixes it?

I have a new LG C1 that I use as a monitor. Sometimes I'll notice that there are a bunch of red flashing pixels in black backgrounds that are spread throughout the screen. This usually happens after I turn the TV on. I thought it was a G-Sync issue, so I turned G-Sync off. However, it is still occurring, and turning G=Sync on then off, seems to fix it (sometimes I have to do this a couple times to get rid of all the flashing red pixels).

Any ideas on what's causing this? Is my TV defective, or is something else going on? My TV has 220 hours of power on time. I will note that there is also some blue/green tint on the sides, and a slight yellow in the middle, which can be seen when there are gray and white backgrounds.

MY PC has a GTX 1080, which is connected to the TV via hdmi, if that matters.
 

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