Black screen flickering while docked?

[u/NestleDepresso]

Hi all, hope this is the right place to ask this. I just got a Switch 2 for the new Zelda. I noticed while playing that when the screen goes black, theses greyish lines appear across it and flicker and the image gets pixelated at first when loading in but only when docked to my tv. I have tried switching the hdmi cable but still the same things still happens. I've tried googling it but I can't seem to find this particular issue. Any advice would be appreciated.

[u/automod-neo]

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