lightmapping problems

I write because I have a problem with Unity lightmapping, it has been 4 days and lightmapping is not finished, I have a powerful computer (i7,24GB-RAM, GTX970) and the scene is not very big, someone can help me, I tried to download the Lightmapping quality but also takes a long time. And I need the quality to be very good. It’s for VR

Can somebody help me?

Thanks in advance.

That’s not enough information.