They likely just don't enable the Ray Tracing extensions in the 32bit driver.
https://github.com/GPUOpen-Drivers/xgl/blob/5dd432ade87244461b8cf357b5cb641e7ee7ff15/icd/api/strings/extensions.txt#L145
https://github.com/GPUOpen-Drivers/xgl/blob/5dd432ade87244461b8cf357b5cb641e7ee7ff15/icd/api/strings/extensions.txt#L189
How is this a DXVK issue when your Vulkan driver doesn't expose certain extensions for 32bit applications?
Nothing extracted yet.
Left - vkEnumerateDeviceExtensionProperties, right - extensions supported