Thanks everyone for answering, i don´t knwo why, I don´t receive email notifications
The floor roughness is configured in the material, but the planar reflections have their own roughness, the problem is that the planar reflections blurriness is only applied verically, so it´s not a good blurry result, it´s pretty bad and in the end it still appears shyny.
Regarding the reflection captures, because the floor is not completely blurred, just pretty blurred, but the windows of the space are pretty bright so their reflection should be in coordination with the actual windows, with spheric capture I can´t achieve that, it´s not precise enough, unless I´m doing something wrong that can fix that.
Finally the prefilter roughness with the planar reflections, is what I used, but the effect, as I said before, it´s pretty bad, and the floor still appears shiny, and it has a limit, I cannot blur as much as I want, it blurs the scene up to some point, but it is still pretty defined, not really blurred.
The specific use case is creating a high quality floor of wood with jsut the perfect reflection amount, I achieved that using SSR, but I would prefer to user Planar reflections or captured reflections, is just i can´t get those two to work correctly it seems.
Thanks for the ideas!