I changed 12 settings on my Apple TV to instantly improve the performance

Do I lose out on HDR by forcing 4K SDR?

No -- not if you keep Match Content enabled, anyway. The 4K SDR format setting prevents unnecessary switching on menus and SDR content, but genuine HDR streams still display in full HDR when available.

Can my TV even handle 4:4:4 Chroma?

It's worth testing. Connect a quality HDMI cable and switch to 4:4:4. Look for clear text and sharp edges when displaying content with fine details or text. If text appears blurry or jagged on the edges, or if you notice any flicker or dropouts, revert to 4:2:0.

How often should I recalibrate color balance?

Once or twice a year, or after major tvOS updates, is fine. Your color accuracy does change over time, so it's worth recalibrating.

How do I clear the cache on my Apple TV?

Your Apple TV doesn't offer a specific "clear cache" option like some other devices, as TVOS is designed to manage cache automatically. You can still manually delete or offload apps, though, if you want to better manage your available storage space.

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