APPLE TV 4K frame rate and dynamic range matching OK????

Doesn't have the Apple TV 4k turn to 1080 or lower if the content is not 4k?

Apple TV 4K will output all content in 4K, if that is your resolution setting. That means 1080p content will be upscaled before sending it to the 4K TV screen.

Match frame rate would try to use 24 fps or 25 fs or 30 fps if that is the content’s native frame rate.

Match dynamic range will use HDR10 or Dolby Vision, if the content is available as such AND your TV is capable of that format.

Because I'm beginning to think that dynamic range on and frame rate on doesn't work at all.

Dynamic range and frame rate have nothing to do with the resolution.

Hello, Ljnavarro! Thank you for using the Apple Support Communities. We know that you must be interested in seeing the best picture possible from your Apple TV and we’re happy to help. 

From what we understand, you may have some questions about how frame rate and dynamic range features of Apple TV work. We’d like to provide you with an Apple Support resource to get started with. Please review this information and let us know if you have any other questions. 

About frame rate and dynamic range matching on Apple TV 

We hope that this information helps you find an answer. 

Cheers!