Good to hear that the tip #2 works for you in Lr (see
https://helpx.adobe.com/lightroom/kb/crash-gpu-directx-enabled.html to force Lr falling back to OpenGL and see if it helps. The tip works with macOS as well).
The following is a workaround for Camera Raw, it involves editing a GPU preference file at this location:
/Users/[user name]/Library/Application Support/Adobe/CameraRaw/GPU/Camera Raw GPU Config.txt
Edit the text file (actually an XMP formatted file) in a text editor
change the line:
crs:gp
...