Question Lightmapping Realtime Lightmap resolution - How to scale it up?

Unity ver version: 2021.3
Lighting mode: Substractive

Hi everyone,
I have an issue in regards to the lightmap quality on my object. My issue is that I dont get accurate shadow and AO on small objects (witch are at the right scale for my needs - this is for a VR project).

Here is an example in attachment. The is an upper cabinet at the right physical scale (on the left). When I scale it up in unity (5,5,5) instead of (1,1,1), in renders correctly. I noticed that even im im baking lights (Light set to Baked and not mixed), it still creates a Realtime Lightmaps. I notice that the UVs in my scaled up version is 5x higher (since I scaled up my object), witch seems to resolve my issue. The one at the proper scale is lacking all the light quality.

If I scale up the ''Scale in lightmap'', it doesnt affect the ''Realtime Lightmap'' scale, witch seems to be my problem. So my question is, how to you scale the resolution into the ''Realtime Lightmap'' texture without scaling your object?

Thanks for checking

 

Image here