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[Mac/eGPU] ProRender Crash Blender and Render Issue with multiple GPUs

Question asked by mirkosantangelo on Feb 23, 2020
Latest reply on Apr 17, 2020 by Guest

Hi all! I'm using ProRender 2.3.4 on Blender 2.82.
My setup is a Macbook Pro with AMD Radeon Pro 560X and AMD Radeon RX Vega 64 (connected via a Razer eGPU enclosing box).


When these two GPUs are enabled via the Render Settings at the same time (See following configuration) Blender crashes almost on every operation (Moving a light, opening a new panel, etc). The crash happens on both following configurations.


See attached video (prorender-bug) on this message for a sample.



The only workaround to prevent this crash on Mac OS is to disable the eGPU on the viewport (which is counter-productive).




This is of course not the ideal solution. Plus, looks like that if I enable the eGPU only, the rendering on the viewport stop working. See attached video below (viewport-render-bug-egpu). (As a side note, on Cinema4D R21 I'm able to enable the eGPU-only in ProRender with no problems, both in render and viewport).


Any help will be very appreciated. 


Many thanks in advance!