I have a similar setup, but just a GTX1080 and I am still very happy with the results.
There is now an RTX3080 and probably a G2 on my shopping list, but the money will be in my account for sometime yet, with the apparent shortages of both. Maybe the 3080ti will come to the rescue?
They really need properly implemented tracked controllers. But I am very happy they released it without those yet, because they take a lot of work to do it right.
You have something wrong with settings if it doesn’t work for you. It’s maybe less smooth than Aerofly (that is a masterpiece in relation to VR) but it I have subjectively twice higher FPS, that X-Plane (that is also fine with me). Even after long flight with constant head moving, no problems with FPS and Motion sickness.