I like this one even better than the last, and I loved that one!
And yes, since you posted at 4am and 7am, not much chance for me to respond at that time.
Like I said before, I think you guys should use the 'localise' parameter of the borealis cloud layer, this would stop it from extending to the horizon and significantly reduce render time.
Also, as Dune said, make the depth much shallower so that as many samples are not required and that would also reduce render time a little bit.
Most prominent to me from your shared .tgd(that I also mentioned to you before) was the atmosphere samples, they really do not need to be so high at all(nearly 400 samples for a very thin atmo is completely unrequired). It's the clouds that contain the noise you want to rid, not the atmosphere and this will really increase render time. I would say 32 samples at most would suffice for this scene, you have really not got a thick atmo that you need to bump-up so high.
Finally, FrankB said it all by saying that you should use 'ray-trace atmosphere' in your render node for this scene.
Considering all the input you actually have had already, it was maybe a little unwarranted to start shouting about how people here are just trying to out-do one another and how 'great' the members are in general.
I always aim to post the best advice I can think of at the time I post, unfortunately, if that time is between 4 and 7am then I probably won't be around, as will many of us European time-zone folks who visit here.
Hope you have some luck tuning the file, it really is lovely but 90 hours is a bit much to wait on it, hopefully, with some of the advice you've received, you'll get there in the end.
