Lumen Refections Grainy

Hi, I’m still new to UE5 and was wondering if someone could help me to solve bad lumen reflections. I’m currently working on a TV studio design and wish to achive a nice looking set but the reflections are mostly grainy and noisy.

I have raytracing enabled and tried to change most related settings but nothing really helped.

You have no antialiasing, which is probably the biggest issue.

That aside, the sample count scale can be set in the post process volumes under the Lumen reflection Quality setting which will reduce the noise. I doubt it will be able to overcome this issue though, you need antialiasing (preferably TSR or TAA)