The rendering time depends on the rendering settings and the shaders and light settings.
You have set the precision and hemisphere to 5, you should try with 4, also the interpolation should be enough at 1.
Also you have a parquet on the ground, if the shininess is set to a value lower than 750, it might take longer for an equivalent result.
You might want to read an article we published, that should help you understand the effect of the different settings: https://artlantis.com/2017/10/30/speed- ... antis-6-5/
and maybe reduce the rendering time.