Question Waves across parts of screen in certain situations?

Ent

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Hello all,

Apologies in advance if this isn't the right place to put this

A few days ago I got a LG 55C7. Picture is great and all, but there are times when I see what appears to be waves blowing across parts of the screen. It normally happens in dark scenes, or ones that have scenes that have parts that are out of focus( depth of field?). It seems to happen mainly in the parts that are out of focus.

I noticed it first during Game of Thrones, but have noticed it a couple more times since in other shows (Mr Robot). Just wondering if it's a normal thing? It doesn't happen much, but it's noticeable when it does. It's hard to explain properly, but it looks like waves of dust kind of blowing on the screen(left or right), but with a watery texture.

Thank you
 
Sounds like something I call colour banding. I thought it had been fixed with the 2017 sets but noticeable on poorer content on my C6.

I believe the Sony Oled has smooth graduation that helps with this but LG don't have that option.
 

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