I have a simple solution to stream 4K at 100% fidelity. I buy the 4K HDR blu-ray and rip it bit for bit to my digital library on my media server. I can then stream it as much as I want with my HCPC at 100% bit to bit accuracy using my JRiver Media Center. Using Plex, I can stream from remote locations directly to my device of choice. As much as my broadband can handle outbound (200Mbps upload) of course. I can always use the disc if I want to, load the digital version (mkv/mp4) of the movie onto portable storage to watch anywhere or stream it. And I own the original source. Since I went 100% pure digital, I haven't even turned on my Oppo. My Cinema experience is multitudes better and more seamless as a result.
AVR: Denon AVR-X7200WA | 4K: Oppo UDP-203 | Media: Ryzen 1800X 32GB DDR4 HCPC, Synology DS3615xs 172TB | Gaming: PS4 Pro/PSVR 10TB, PS3 | Speakers: Polk LSiM: 1x706c, 2x707, 4x900LS, 4x702F/X | Subs: 2xSVS PB4000, 2xSVS PC12+, 5xButtkicker BK-LFE | Vid: Sony VPL-VW885ES | Amp: Emotiva XPA7 Gen 3, Parasound 2125, 2xQSC GX3 | Power: 3xFurman Elite 20 PFi | UPS: APC SMT3000, 2xSMT2200 | Screen/Misc: 138" 2.35:1 Stewart CIMA Neve, Harmony Elite