Hardware acceleration support on Big Sur with Opencore

Hello everyone, for the life of me, I can't figure out how to have 4k h264 and hevc support.

My specs :

• Core i5-6400 (Skylake)
• Nvidia GT720

Set device properties for my platform as indicated there : https://dortania.github.io/OpenCore-Install-Guide/config.plist/skylake.html#deviceproperties

Tried different smbios etc but nothing works.

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videoproc