Weird flickering only on some objects

Hey guys, im facing this issue but only on some objects and when i render video is even worse than in viewport

here is link to watch

I hope someone can help me, i tried increasing final gather quailty to 5-10

Best regards

Not at all good with materials/textures; but I’ll just throw out “lumen.” That word comes up a lot in reference to light issues. In fact, I just searched and found this:

Fix Lumen Light Flickering in Unreal Engine 5.3 Tutorial