Help finding windows 10 build with auto HDR

hey. so i have a ryzen 5950x gaming rig and with all the issues with L3 cache and perfered core bugged in windows 11 i just want to go back to windows 10 for the time being but i dont want to leave auto HDR behind. i guess there are dev builds that started back in june i think that added auto HDR to windows 10.

not sure what is the latest dev build that is windows 10 and has auto hdr and where i can go about downloading it .

i tried uup dump and downloaded build 10.0.21390.2025 but when i go to install it i just get an error saying cannot install :confused: