@_Kai_: If you look at the bottom of the screen next to progress bar of the show you're watching you should see the settings, where it should be possible to adjust the resolution and disable HDR if it is active. Alternatively, on the TV, go to Settings > Picture > Expert Settings > HDR+ Mode and enable this option to see if this improves your experience.
Ah, the user manual does state that this function may not be supported depending on the model or geographical area, so apologies for that. Were you able to find the resolution options in the Netflix app to disable HDR?
It would appear that some Netflix originals are in HDR as standard, which is why you're unable to adjust it. you could try signing in to your Netflix account via a browser and going to Account > Playback Settings and switching this to Medium to see if this helps, although I'd recommend reaching out to Netflix support to see what they suggest.
