Underside of supported parts surface finish

[Meister]

Hello everyone

I'm still pretty new to the 3D printing world but I do figure out most stuff out on my own in general but this one I'm not at all sure what the solution is. I have printed a few things with the help of supports but it seems that the underside of the supported part where the actual supports hold it up don't have a decent finish to them. I'm wondering what settings would be the appropriate ones to help improve the surface finish of the part being held up. Basically it's the bottom surface where the part begins printing on the supports. The rest of the prints are generally fine aside from just that particular problem.

Any help would be greatly appreciated and I can also give you more information if you need it but here is what I have in terms of equipment, slicer and filament used

Bambu Labs X1 carbon with AMS
using bambu studio as my slicer
eSUN PLA+ regular filament

thank you all for any help you can give me