Tried a lot of this… What ended up fixing it was reverting my NVIDIA drivers far back to version 517.40!
No idea what’s conflicting, but it might have something to do with virtual textures because my drivers auto updated at some point recently, unreal was working fine, then I imported some virtual textures (udims) and boom the crashing started again 
But then, realized an update snuck in, and reverted to 517.40 again and its working again.
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