UE 4.16.1 on GTX 1080 Ti wont start

Hello.

I am trying to launch the Unreal Editor (4.16.1) from the Launcher, however, I get the following message instead :
“DX11 feature level 10.0 is required to run the engine”

This is happening on a GTX 1080 Ti (Driver 382.53, Windows 10, DX is updated)

I tried reinstalling both the launcher and the engine.
Is there anything I can do?

Thanks.