Lightning : how to remove reflexion spots on smooth surfaces ?

Hello.

I got a small problem using Unity's ligtning system. In my scene, I got 3 directional lights : one for the main ambience and lightining, the second to give a reddish effect to the scene, and a third one, in the opposite direction, a blue one. (The second and third one have no shadows)

The main thing is those lights are generating reflexions on the smooth surfaces, like "spots".

Do you have an idea to remove these ?

Here's a screenshot :

 

Set the directional lights you don't want to have reflections to be non-important. This will bake them into the diffuse ambient lighting.

 

S

I tried to set them to be non-important, I still have the reflexions. I also tried the mixed mode, still does not work.

 

Also, I think I forgot to precise this, but I use the Post-Processing stack from the Assets Store, and I used the Screen-Space Réflexions from this as well, is that a problem ?