Test it with multiply different Anti-Aliasing methods.
Lemme know if anything changes
EDIT: My thoughts on TAA Ghosting in moving foliage in Unreal Engine 5 - #3 by _Solid_Snake
I found r.AntiAliasingQuality=3 -make sure you put that first to stop ghosting.
r.TemporalAACurrentFrameWeight=0.3
r.TemporalAASamples=2
r.TemporalAA.Upsamling=0
FXAA on quality 5 looks great with r.Tonemapper.Sharpen .3
TSR would be worth putting on if it wasn’t for the insane ms cost and rotation smearing issue. That rotation bug is something I’ve never seen before in a temporal solution.