Unfortunately F1 2021 is DX12 only, hence there is only depth buffer 3D (Z3D), that’s what causes the antenna glitch. I’d suggest to switch to the above-helmet-camera for driving. The antenna isn’t in your line of sight from that position.
If you happen to have F1 2020, you might also want to try that. It still supports DX11, which for vorpX means the profile has actual Geometry 3D. Slower since everything has to be drawn twice (once for each eye), but more realistic.