A new set of Nvidia drivers is available today (387.92), intended to support Middle-Earth: Shadow of War, The Evil Within 2, and Forza 7. The company focus on the Shadow of War support in that article, and include GPU suggestions for various resolutions and settings.
If you want to run Shadow of War at Ultra settings and 60fps/4K, Nvidia reckon you’ll need a pair of 1080ti cards in SLI. However, for 1080p at High, a rather more modest 1060 (albeit the 6GB version) is recommended. The game has optional 4K cinematic and texture packs on Steam, so if you’d rather download 67GB rather than 97GB you can opt out. Of course if you actually want to use the 4K stuff, you’ll need to download it.
A new video showing Shadow of War running at 60fps and 4K accompanies the driver announcement. You can see that below, along with the notes for this release.
New feature and fixes in driver 387.92
Game Ready – Provides the optimal gaming experience for Middle-earth: Shadow of War, The Evil Within 2, and Forza Motorsport 7.
Game Ready VR – Provides the optimal gaming experience for ARKTIKA.1.
Added support for OpenGL 4.61
Added NVIDIA GameStream support for HDR under Windows 10
Added Fast Sync support for SLI
Implemented improvement in full-screen Vulkan applications for 32-bit Windows swapchains.
Added support for the DirectX Intermediate Language (DXIL)
SLI Profile – Added or updated the following SLI profiles:
Middle-Earth: Shadow of War
The Evil Within 2
We Happy Few
Driver Fixes[SLI][Intel X299]: Low GPU usage resulting in poor performance occurs with the X299.  [YouTube]: With Fast Sync enabled, twitching occurs in full-screen YouTube videos while moving the mouse cursor. [Discord]: Share FPS overlay appears in the application.  [HTC Vive]: VR view may jump at random times.  [NVIDIA Control Panel]: Custom resolutions are not preserved after updating the driver.  Win10
[NVIDIA Control Panel][ASUS 4k display]: “Use NVIDIA Color Setting” is not preserved after updating or rolling back the driver.  Lines flash across the screen momentarily while booting into Windows. 
Important Open Issues[SLI][GeForce GTX 780 Ti]: There is no display output when connecting the DisplayPort and two DVI monitors.  [GeForce GTX 1070][Adobe Reader 3D]: There is corruption in the PDF.  [GeForce TITAN (Kepler-based)]: The OS fails after installing the graphics card on a Threadripper-enabled motherboard.  [Photoshop CC 2017]: “Photoshop has encountered a problem with the display driver…” error message appears when selecting Path Blur after first launch of the application.  [Notebook][MS Hybrid][HDR]: On Hybrid systems where the discrete GPU drives the primary display, there is momentary corruption before a streaming game goes into full-screen mode.  [Notebook][GeForce GTX 1080][G-Sync]: Stuttering occurs while playing games such as Doom, CS Go, and Witcher 3 on the external display.  [Notebook][GeForce GTX 1080]: Stuttering occurs when playing a game on the external display.