I did not get a start error but...
I updated my Asus laptop computer (with a1080ti graphics) to the most recent Windows build and that went well.
On a Dell desktop computer, things did not go so well after the 1803 update.
After the windows update, my graphics card (nVidia 1050ti) driver would not load, so all video went back to a virtual graphics card (a really really bad way to render graphics).
VMix CPU usage was horribly high... not a surprise when it can't find the video card hardware.
Downloading the latest nVidia driver
from their website solved the issue on my desktop computer.
http://www.nvidia.com/do...esults.aspx/134070/en-usSupported products for this driver build:
NVIDIA TITAN Series:
NVIDIA TITAN V, NVIDIA TITAN Xp, NVIDIA TITAN X (Pascal), GeForce GTX TITAN X, GeForce GTX TITAN, GeForce GTX TITAN Black, GeForce GTX TITAN Z
GeForce 10 Series:
GeForce GTX 1080 Ti, GeForce GTX 1080, GeForce GTX 1070 Ti, GeForce GTX 1070, GeForce GTX 1060, GeForce GTX 1050 Ti, GeForce GTX 1050, GeForce GT 1030
GeForce 900 Series:
GeForce GTX 980 Ti, GeForce GTX 980, GeForce GTX 970, GeForce GTX 960, GeForce GTX 950
GeForce 700 Series:
GeForce GTX 780 Ti, GeForce GTX 780, GeForce GTX 770, GeForce GTX 760, GeForce GTX 760 Ti (OEM), GeForce GTX 750 Ti, GeForce GTX 750, GeForce GTX 745, GeForce GT 740, GeForce GT 730, GeForce GT 720, GeForce GT 710
GeForce 600 Series:
GeForce GTX 690, GeForce GTX 680, GeForce GTX 670, GeForce GTX 660 Ti, GeForce GTX 660, GeForce GTX 650 Ti BOOST, GeForce GTX 650 Ti, GeForce GTX 650, GeForce GTX 645, GeForce GT 640, GeForce GT 635, GeForce GT 630