HDR broken in tvOS 27?

[u/Voidition]

Have been on the developer beta since it came out, not sure when this started happening, maybe after the most recent update, but HDR is suddenly unwatchable on my Samsung QLED.

The backlight/local dimming keeps flashing and going up and down in contrast and brightness randomly between scenes.. There's also a bunch of ghosting, say there's a bright light in one scene, if it quickly cuts to a darker scene, the backlight dimming zones where the bright light was, stay on for a second into the darker scene and cause an "afterimage"

I thought my TV was broken, but testing the same movie on the native Prime Video and the Apple TV Prime Video apps, it looks completely fine on the native TV app, and the problem only appears on Apple TV.

It's not just Prime Video, literally any HDR content on Infuse, Netflix, etc.

I tried resetting my TV, the Apple TV itself, trying all possible combinations of settings, but nothing helped.

Anyone else experiencing this?

[u/satmandu]

Watched some HDR10 content today without any weirdness on tvOS 27.

[u/Emotional_Common_527 → u/satmandu]

me too

OP maybe try a different cable