From 4.8 to 4.17, what changed in the SSR (it more noisy)

Development Rendering
1

I was working with 4.8 and had to change to 4.17. With the same test scene, the result are really different. There’ s a lot more noise with the 4.17

Any way get a better reflection. (i did change the SSR quality and there’s not a good difference, and planar reflection still cost too much for me to use it)