Got my Rift now about 6 weeks, daily racing offline in practise and some quick races and using Content Manager and good and bad weather mod
No issues at all but Tuesday I wanted to host a Assetto Corsa server on my own pc to have some fun with friend, started on Spa, few round and cars, all good, than suddenly next track I can drive, but wanted another car and than it started over and over.... I load the track, I see my car on the monitor ,put the headset on, nothing ,only sound from the car and game but the headset was still in the "home" environment with the fireplace, I tried directly offline practise,all fine, go back online to my own server,again only sound, online racing on other people have no issues,
Tried many things ,reinstalling drivers, resetting hdmi and usb cables, have a triple monitor setup, disconnected two monitors
Repair Oculus, uninstall Oculus, nothing that helped me out this weird issue,
Windows 10 1809 installation is about 2 weeks old..
On the internet read simular issues but mostly on windows 7 machines,and all the things above fixed it for those people..
So in short, only happens while I host a server and use VR = no game on headset,only sound and see the game on the monitor.