After struggling with random stuttering and fps drops, before I went to bed last night I tested a few different drivers.
The latest one... 419.35 is a joke, don't use it. The GPU usage keeps dipping to around 10% and causes horrible fps lag until the game crashes.
418.81 - Is significantly better.
399.24 - Crashed on startup
411.70 - Refused to install
417.71 - Currently testing, but has so far given me the best benchmark result.
So I've just noticed something with 417.71...
Unlike 419.35 and 418.81, when I set it to Max Performance in the Nvidia Control Panel... in game the GPU clock speed actually remains high (except when loading and fps is limited to 30).
The recent drivers no not do this for me, the clock speed is constantly going from 1936mhz down to around 1500mhz. So not surprisingly this is why my fps is all over the place.
So far since playing with 417.71 I have had one crash, but oddly I think that may have been caused by someone messaging me on Steam.
Since closing Steam I have not had a single crash and not a single fps drop or any stuttering.
Utterly heavenly compared to 419.35
If you do try different drivers, remove them from Windows first, then use
Display Driver Uninstaller to clean up drivers, preferably in Safe Mode.
To get to Safe Mode, hold Shift when you Select Restart (Windows).
Then Select Troubleshoot, Advanced Options, See More Recovery Options, Startup Settings and click Restart. Select number 4.
Hope that helps
Spec: i7 6700k, 1080ti and 16gb DDR4.
Edit: Just thought I would add that I have been playing at 1920x1200, all settings as high as possible in DX12.