Small PH Interior

[VASLAVO]

Hi guys, heres some appartment ph model we made  about a month ago, corona daily build, Hdri sun, every light is mesh, 3k original resolution, almost 12 hours render time, no portals (for some reason portals made them mush slower), some photoshop correction, C&C welcome.

[art-MIXER]

I have a similar problem, all exactly the same, portals I added only problems, without them was cleaner, but still 12 hours on 3K (

[Stan_But]

I think here is trouble with wrong albedo (too high than it need be). As in the metals and in the dielectrics.
From here is the long time to clean from noise.

About the portals - here we have the scenario of light when the windows are huge and portals could be not needed