Problem with FilmGrain 2

I have encountered an issue with FilmGrain 2 when playing Red Dead Redemption 2 and Horizon Zero Dawn, after like an hour or so of playing the grain will stop floating around and just stays there, still. Weird thing is that i have noticed it only after upgrading my 980 to a 2080, i doubt that has anything to do with the problem though. I really like this shader, been using it for years and this issue really bummed me out lol, please if anyone knows what is going on, help me

It's probably an issue with random noise generator algorithm, where seed (perhaps number of frames or time) gets to high-enough number, everything breaks.
I have made some film grain shaders that wont experience this problem, like SimpleGrain.fx .

I haven't tried Reshade 4.8.2 yet, so i don't know if that fixes what it's causing the issue, but wiith 4.7 i fixed it(after some research lol) by changing this linewith