Light spots flickering in the foliage. Lumen and hardware raytraycing.

Hello!
Can anybody help to understand and solve the light spots flickering problem in foliage.
I’m using UE 5.4.3 Lumen and hardware raytracing enabled.

https://www.dropbox.com/scl/fi/r9wwz4ik5b039lmgrztxb/Test_5.mov?rlkey=kn7d7yxnvwt6kfb21x2gnjxjz&st=r2b1yd0f&dl=0