Hello Ed,
Great news ! I think I found something that almost eradicated the driver crash on my machine (I say almost because while doing my tests I still got one, but that might be a mistake I did, or related to another issue)
While looking for this kind of issue here and on AMD forums/reddit etc. I saw several posts regarding DX11/12 stability for R9 380 video card on Win10, and I thought I could give it a try.
In the project properties, there are no options for DX12, only for DX10 and 11 (does it means DX12 has yet to be officially supported ?), but opening the project with -DX12 argument in the shortcut is supposed to enable it and that seems to have fixed my issue.
Worked several hours, stress tested it and no crash. Now, that doesn’t mean it won’t happen again, but that looks way more stable now.
tldr : adding -dx12 argument in the shortcut enables it, which makes the engine more stable in this specific configuration.