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Cuda error: cudaErrorDevicesUnavailable (all CUDA-capable devices are busy or unavailable) Device : GeForce GTX 1070

despite the fact that newest nvidia drivers (studio or games ready) were installed, keyshot 9 crashes GPU-mode often:

(14:14:48) Cuda error: cudaErrorIllegalAddress (an illegal memory access was encountered)
(14:14:50) Cuda error: cudaErrorDevicesUnavailable (all CUDA-capable devices are busy or unavailable)
Device : GeForce GTX 1070
(14:14:50) Failed initializing OptiX driver
(14:14:50) Could not initialize GPU renderer. Using regular product mode


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Hello Lucretia,

Are you enabling 'Light Source Shadows' on a Toon material in GPU mode?

 hello. didn't used toon materials at all

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