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• macOS/Apple Silicon: The denoiser is not supported on Apple Silicon, even with Rosetta.  RMAN-20408
• If your image has NaNs from either RIS or XPU, the denoiser will fail on macOS and Windows.
• The denoiser can only cannot denoise images from XPU on Linux.  For Linux, Windows, and macOS Intel machines, the , it currently produces blurry images.  The denoiser works for RIS.XPU is not ouputting AOVs with motion vectors, which will reduce the cross-frame denoising quality. 

RIS and XPU

• Color Management: Although we have upgraded to the VFX Reference Platform 2021, there are still color management limitations:
  • IT does not support OCIO 2.0 configs yet.  RMAN-19921
• MaterialX: Material layering is not supported.  RMAN-20365

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