sure a hardware misconfiguration can cause it in different graphics software, but UE4 is known to have gpu HUNG crashes aside of hardware misconfigurations. they are simply caused by some obscure resource mismanagement from UE4 itself.
plenty of users have it:
https://forums.unrealengine.com/unreal-engine/feedback-for-epic/101964-to-developers-ue-4-14-crashes-error-0x887a0006-hung/page7?129394-to-developers-ue-4-14-crashes!-error-0x887a0006-hung= / Unreal Engine is exiting due to D3D device being lost. (Error: 0x887A0006 - 'HUNG') - Getting Started & Setup - Epic Developer Community Forums
at work we have a live UE4-based game in beta and a significant amount of our users experience this crash, and I also have it at home and at work (both on a GTX 970). I know I do not have any overclocked hardware and all my hardware is properly plugged and configured. I also only experience this sort of crash in UE4, and never in any other sort of game or graphics software (including different 3d modelling and animation software), not even in UE3 or UE3-based games.
telling people to check their hardware would be something to do were this a mere fluke from a few spare players, but the issue has a much bigger user scale that what would be reasonable to simply suspect misconfigured hardware - this issue is not an anecdotic happening from a handful of users.
also Epic has acknowledged and fixed a few of them Unreal Engine Issues and Bug Tracker (Search Results) - if your assumption were correct then Epic would have never been able to fix any of them in the past.
the issue exists on Epic’s side Unreal Engine Issues and Bug Tracker (UE-51650) and it affects Fortnite as well so it’s on Epic’s best interest to fix it :rolleyes: