Bug of Prores Raw Decoding on AMD Laptops
I'm using an AMD laptop made by ASUS which features Ryzen 5900 HS(with integrated GPU) & RTX 3070 GPU. I've installed the apple prores raw codec. Even if I tried to set Premiere Pro to only run on the RTX 3070 and I set the project to render on Mercury Engine CUDA, it still refuses to decode my Prores Raw footage.
The only work around is to DISABLE the iGPU manually in device manager, and after the project is loaded in PR, we can enable iGPU again. This work around proves that the laptop is actually capable of playing and rendering the prores raw files. It's the way that Premiere Pro sniffs GPU that's blocking prores raw to load.
This bug is also related to GPUSniff.exe. As long as it cannot find out that you have an AMD iGPU on your laptop, the prores raw decoder can work.