I had a big problem with DX11 with my PC,
1080ti
8700k
32gb ram
1tb ssd
I opened up task manager and found the game was using 100% of my CPU, not much of my gpu at all and about 6gb of ram. The goblin camp area had horrific stutter.
Happily this issue went away for me using Vulkan and CPU usage was much better. No amount of fiddling with other in game settings changed a thing for me.