Those are my benchmarks. VR was much smoother after upgrading from a 5600x to the 5800x3D, together with my then Radeon 6800XT Radeon, so if the OP wants to reduce stutters this is worthwhile. Now with my 4090, I get almost twice the performance in VR with the 5800x3D.
2D FPS increased by 15-18% with the 5800x3D, depending on aircraft and location. Cost and performance wise, the best CPU upgrade you can make right now without switching to Intel or waiting for a 3D version of the new Ryzen 7000 series CPUs.