Played a few hours last night, so FWIW, here's one more report:
6700k @ 4.5
16 gigs DDR4 @ 2600
GTX1080Ti STRIX +300 mem
1440p + gsync
Win10
edit: Game on SSD
For some bloody reason the game insisted on starting up on my secondary monitor. Made absolutely no sense, no other game has done this. Luckily alt-enter, moving the window to main screen and hitting alt-enter again did the trick.
Performance is rock solid outside of rare, seemingly random stutters that also cause the sounds to bug out a little. Would be annoying, but they are so rare that it's a non-issue. Other than that, I've seen anything from 70fps to 144fps on Ultra settings. GPU memory usage with Ultra textures goes as high at 9 gigs. Frametimes look pretty darn nice and steady outside of the said random hitching. edit: CPU usage hovers around and below 50%, so the GPU is the bottleneck at 1440p basically all the time.
Game isn't the prettiest of them all, but ehh... with the amount of orcs on screen at once, and near-perfect performance, I'm certainly not going to complain about it. You have to make it work, and when there are a hundred characters to render, something else needs to give.
All in all a nearly perfect PC version at least with a high end rig.