VFX Shadows flickering using HDRP

Hey. I was following a tutorial there and made a VFX library with floating books.
However, the problem is very weird. If I duplicate my prefab with shelves and VFX and paste it (no matter if I try to extend the library itself or just place one more library parallel to mine) the shadows from VFX books start flicker when I turn my camera at certain degrees.

Here is the link to the problem: https://imgur.com/a/oowZlLd

That too: https://imgur.com/a/8DGI48n/

That is happening only if I place VFX graphs with prefab close to each other. With one graph there is no problem with shadows at all. If I place prefabs on big distance between each other there is no problem too.
But when I try to place the libraries parallel (like in first video) the shadows start glitching.

I tried tweaking the VFX Box Bounds but there is no difference at all. I made them 1000x1000x1000 just to check.

Tried with anti aliasing, tweaking the shadows and camera settings but the problem still persist.

I am using unity 2019.4.22f1 LTS , HDRP 7.5.3 and VFX Graph 7.5.3
Thanks!