Netflix on Apple TV 4K through a 1080p display

Does anyone have the issue with their 4K Apple TV playing Netflix Original content in low quality when connected to a 1080p display. This issue only seems to impact Netflix Original content (probably due to something with a 4K/HDR signal?). Internet is fast 500+ mbps and this issue only effects the Netflix stuff. All other streaming services run 1080p/Atmos perfectly. If I move the Apple TV to another 1080 display, same issue. But when I hook it up to a 4K screen... perfect 4K or 1080p (if forced) picture. Driving me nuts because our home theatre currently only has a 1080 projector.