I think you may have missed my post as I am using SteamVR. My post is as per below, however I have since upgraded my Desktop PC GPU to an RTX 3090 ROG Strix OC Edition 24G.
#493
2 weeks ago
"I too am having this issue. It is happening on both my Desktop PC (I9-9900KF, 32GB RAM, ASUS RTX 2070 Super ROG Strix) and my Alienware laptop (I7-9750H, 32GB RAM) with external graphics amp which has an ASUS RTX 3090 Turbo 24G OC. I have three different VR headsets and all of them have the same issue on both of my systems. I have the Vive Pro, Vive Pro 2 & Pimax 5K Super. I can get smooth frame rates, even playing on Ultra settings on my RTX 3090, however the head movement stutter makes the game unplayable. This is a real shame as I really don't want to play through the game in 2D (which works fine). I have several other racing titles which do not have this issue, namely, Assetto Corsa Competizione, Assetto Corsa, Automobilista 2, Project Cars,1,2 & 3, Rfactor 2, Dirt Rally 1 & 2, Kartkraft & Raceroom experience.
I have tried all the fixes suggested by people on the net, so I logged a case with EA. Hoping this issue gets fixed as I'm hanging to play in VR!"