Hi minh and welcome to our forums!
The difference in noise that you can see on the sideboard are related to different techniques used to denoise the rendering during walkthrough or for capturing. In some cases the denoising in capturing can currently result in these speckles on surfaces with a material with medium roughness.
Unfortunately there's currently not much you can do, except try if other roughness settings of the material look ok and reduce the effect.
We're already working on an improved denoising solution for capturings!