Howdy Red, its me again...

Did you render the dragon scene above with a 30 series GPU? If so would you mind posting your render settings here?

I don't wish to offend, but if you're using a 30 series GPU It probably shouldn't take more than  5min(Possibly less than 2min or even 1min) to render that scene regardless of how complex it is.

It may be time to think outside the box, having great respect for the render Guru's frequenting this venue...this ain't quantum physics... Optix rendering on 30 series GPU's  is a whole 'nuther smoke from what we've gotten used to previously...... Bigger Better Faster is the flavor of the day...

Lets hash this out, rite here in the public forum using your Dragon scene above as a test bed...Shouldn't take more than 10-15 min of your time each day/week/month if you're game.  If you don't wish to participate its totally OK,  I'll drop it no problem,                                                                                                                                            

Here is my suggestion as a starting point.....

Its important that you enable noise reduction in PostFX, I know  how you(and others) feel about NR,  just humor me on this and(if you're willing) I'll show you how to fix it.

Render the entire scene leaving nothing out...The first draft may be ugly, but post it anyway so we can track your progress. If it takes a week or more for you to get around to it, I don't mind I'm retired now, and I have the patience of a Pope....LOL

Y'all have a great day.