Was having issues with crashing to desktop during initial loading of the Horizon 4 Demo. Installing the latest Nvidia Driver from 9/10/18 fixed the problem and game runs great.
for me that driver causes crash to desktop at microsoft studios splash screen. i had to go back to older driver on my gtx 1070 card. only way i have gottin to work is by disabling sound and y we dont have a fix or mention about this yet is upsetting