If you mean the vkCreateGraphicsPipelines assertion, then yes, that's still causing crashes at startup, and can still be worked around by deleting Data/PsoCache.pak .
The vulkan build is also crashing (in a different way) for some people after playing for a short time. The only workaround I know for that is switching to bg3_dx11.exe + DXVK.
I have a lot of criticism for The Witcher 3, but one thing I really appreciated was making lore and character background available for reading. It really helped with this newcomer's understanding of the world and story. (And later, with my understanding of the TV series.)