I'm running Viz 2021 SP3 and renders crash immediately with the following errors in the log:

[246.7] IRT:RENDER 1.31 IRT rend error: A CUDA error occurred: an illegal memory access was encountered
[246.7] IRT:RENDER 1.36 IRT rend error: A CUDA error occurred: an illegal memory access was encountered
[246.7] IRT:RENDER 1.36 IRT rend error: CUDA device 2 (GeForce RTX 3090): de-allocation failed
[246.7] IRT:RENDER 1.31 IRT rend error: CUDA device 0 (GeForce RTX 3090): de-allocation failed
[246.7] IRT:RENDER 1.37 IRT rend warn : A device failed during rendering
[246.7] IRT:RENDER 1.0 IRT rend error: Cannot render: device failed.
[246.7] IRT:RENDER 1.0 IRT rend error: Failed on first frame. Dropping failing devices and re-rendering
[246.7] IRT:RENDER 1.0 IRT rend info : Scene graph manager init took 0.000s
[246.7] IRT:RENDER 1.37 IRT rend warn : CUDA Device 1 - "GeForce RTX 3090" cannot be used: an illegal memory access was encountered
[246.7] IRT:RENDER 1.37 IRT rend warn : CUDA Device 0 - "GeForce RTX 3090" cannot be used: an illegal memory access was encountered
[246.7] IRT:RENDER 1.37 IRT rend warn : CUDA Device 2 - "GeForce RTX 3090" cannot be used: an illegal memory access was encountered