After the last crash patch, I'm crashing constantly in Mistlock seconds after loading in, with dx11 on. No issues with it off. Just adding another 2 cents.
Less than 30 characters, no add-ons, no overlays, dx11 enabled, windowed fullscreen, up to date gpu drivers. Game freezes in group fights in Thunderhead Peaks events. Windows closes it after a while, but no client crash error popup.