My X900F no longer detects the HDR signal within the Plex app on my TV for certain files. This wasn't an issue before as these same files played in HDR previously. If I play these same exact files on my Nvidia SHIELD through the Plex app within that product, then my TV detects & plays the HDR signal, but playing said files through the TV app only gives me the SDR signal. Again, some play HDR just fine, while others won't.
To make sure it wasn't an issue with my TV itself, I did a hard reset. I then checked other apps, Amazon Prime, Disney+, Netflix, etc., etc., and my TV detected & played the HDR signal just fine. Then I deleted the plex app, reinstalled it, played the files again, and still no HDR signal. It's not the files that are the problem since they play in HDR just fine on the Nvidia SHIELD.
What else can I do? Or check? any help would be greatly appreciated.