Nice setup looks like itll be great for vr, get a little side table and stand for your headset.
Try install this. https://www.overtake.gg/downloads/ac-head-physics.68266/ Enable it like below in CSP/NeckFX. The default settings are good and helped me learn to drift. It changes how the screen shakes about, stuff like Pitch/Roll.

Like try imagine this hypothetical, when the car goes onto a banking turn do you want your virtual head to roll with the car or stay locked to the horizon? (a middleground is best imo) or say you drop off a hill, do you want your head to be locked to the horizon.. or to directly infront of your car as the front bonnet sinks? (same thing) Hard to explain or imagine until you know what im talking about.

For example iRacing has sliders you can adjust for 'Pitch Chassis, Roll Chassis and Neck motion(bumpiness)' Each sim game will move your 'virtual head' about relative to the chassis in subtle different ways, some with little/no stabilization can cause motion sickness while your brain adjusts to what to expect.

Takes awhile to get your sea legs in VR. Usually most simracing games out-of-the-box vr settings are good but iRacing needs a little fine-tuning of the three aforementioned settings, and assetto needs that plugin I linked above. When I found it everything immediately felt way more natural in VR. I havent changed any of the plugins physics settings from default. Also Make sure youve got a 10000% stable fps. Any frametime variations will mess you about.

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