TSR cannot handle foliage yet. Even when you turn on output velocity on the foliage material, it will still ghost maybe because you don’t have a high enough resolution(TSR feed) or have enough frames per second (TSR 1spp).
Read this below
Because you have a heavy foliage scene, I suggest you switch to TAA from TSR instead Project settings>AntiAliasingMethod
Because TAA WILL ACTUALLY take into account of “output velocity” in foliage material.
At 4k leave the TemporalAA Cvars on the default and use “r.Tonemapper.Sharpen .5” This is what was used with Lumen in the Land of Nanite(which was at 4k)