After Mac OS Big Sur Upgrade no more full acceleration with RX 580 eGPU

[Martin5E6F]

I am little bit disappointed... I upgraded to Big Sur, now Lightroom Classics do not offer full acceleration with my RX 580 eGPU just the basic acceleration... Before the upgrade everything was fine. 

I already read https://helpx.adobe.com/de/lightroom-classic/kb/lightroom-gpu-faq.html#gpu-for-image-processing -  but everything is clear here: I have a 4 GB+ of VRAM and my card support Apple's Metal. So where's the problem?

Hope you can help me. Thanks in advance.

[GoldingD]

Before the GPU problem occurred, what was your LrC version?

Have you since updated to v10.1?

LrC v10.1 is giving many MACOS users fits.

Many need to roll back to v10.0