Serious performance issue with Shaders/Textures

This whole bad performance as i see is not only beacouse of my potato pc. Most strange for me is why it touch some players (btw. a lot players) but in same way a lot players only complain on loot, density and etc.? I have same visual glitches on Vulcan after some time of playing...

The shader is CONTANTLY being accessed even when I run the same map over and over. It runs through the entire map until it's finished. I then zone back into my hideout (which also takes forever since league start) and then it runs for about 2-3 minutes in my hideout everytime.Last league was fine. Happens on both my gaming laptop and my gaming PC which normally runs at 100 fps constantly. At times im getting 10 fps on both which is unplayable.