Hi @hm
Thank you for using the Microsoft Q&A forum.
Based on my understanding, the NCadsA10_v4 series can support CUDA and should be able to run Stable Diffusion with CUDA. The NVadsA10_v5 series does not support CUDA as it only supports GRID drivers. Therefore, using the NCadsA10_v4 series should resolve your issues with running Stable Diffusion. If you encounter any further difficulties, feel free to refer other similar thread or raise a support case through Azure portal.