VR nausea in a sim can be reduced greatly with a motion system and transducers.
As a prime example Dirt Rally would cause almost everyone who tried out VR to get nausea. After I added an NLRv3 almost everyone could drive as long as they wanted. I'm basing this on about 20 friends who have come over and tried it out. I've had a couple outliers. My son never seemed to have any nausea even without motion and I've had a couple people who still had an initial reaction but who haven't spent more than 15 minutes in the rig.
It took me 5 days of 20-30 minute sessions to get over the nausea without motion.
With my Valve Index I've had zero tracking issues and has been very reliable from a software and driver standpoint. I run 120 fps almost always with VRSS and it looks great. I put the headset on, press the center VR button one in game and everything runs perfectly until I'm done using it.
I have tweaked my Nvidia settings, but that is a one time deal. I haven't touched since I set up VRSS. I don't do anything special when I start up SteamVR. I simply right click on the Steam icon in my task bar and select Start SteamVR. That's it and I have nothing else to mess with. It just works reliably.
My startup sequence is now fairly quick and takes about 2 minutes from boot to being in the game.
Computer boot
SimHub- tactile software comes up automatically
NLRv3 - motion software comes up automatically
VRS - Virtual Racing School telemetry logger comes up automatically
Trading Paints - iRacing Livery comes up automatically
I have a dedicated trackball mounted to my rig that I use for navigation.
I start up Steam VR
I start up Crew Chief and enable it
I start up my SimuCube 2 software and enable full torque for my direct drive steering
Then I start up iRacing, pick a race or practice.
I press the VR center button, and I'm ready to go.
I designed a button box specifically for VR use.
It has a cup holder for a camelbak water bottle with a bite tube which is great for drinking in VR without any spills.
My smart phone is there in case something important comes up.
There is a VR headset hangar which is very handy and I believe a must for anyone racing in VR.
For Dirt Rally 1 or 2.0 which requires a keyboard for navigation, I've got large button box controls.
The large oversized controls work very well in VR.
The top left 4 way joystick is for seat adjustment.
The red button to the right is for Recover / Return to pit / exit
There is a large ignition switch, and a large green start button.
The silver button is HMD center.
The lower right 4 way joystick is for arrow keys.
It has an Enter and ESC button to the left and a Cancel button to the right.
The momentary switches above it are for menu navigation.
I almost never use any of the lower left buttons. All the critical stuff I need while driving is on my wheel, like the pit limiter button etc.
Even past that, my rig lives in the corner of my media room and it only takes me another couple minutes to pull it over to the center of the room, drop the retractable casters, plug a single power cord into a wall socket, turn on my tactile amplifer, plug in the single USB connector and put my VR headset on the hangar and then sit down put on my seat belts and gloves and start the startup sequence I listed above.
I have a keyboard on small table that I can slide over next to me, but I very rarely need it for anything.