I am the only one of our online F1 2020 league who drives in VR with "the" third-party tool. It is a sim league with usual 3-part qualifying and a 100% race directly afterwards. No problems, even if I drive for more than 120 minutes without break in VR. But I wait so badly for native VR support because the performance will be so much better without third-party tools in-between.
You quickly get used to VR. I started with flight simulators (nearly no G-forces). Then soon racers have been no problem any more. Once you try VR, you will never go back to flat monitors again.
So please Codemasters or take 2, give us the VR support for F1 2021 ;)