Other topics already contain most info, about the why and how. I especially put this idea, because of screen shot quality. The current Ultra won’t do that as nice as before, without any tweaks in usercfg.opt.
Related:
I wonder if it would be possible (and an easier change), to just max out scenery graphics quality and cockit graphics quality Ultra++ when active pause is hit… Now, you see your aircraft wobbling during pause… But you don’t move while pausing, so frame rate does not really matter…
So my proposal is: max out all General settings temporarily, let it settle down for a few seconds and freeze the screen. On resume, go back to the previous frame rate and proceed flight… You can enjoy the very best scenery as a still. It could end most wars about Frames per Second versus Scenery Quality… and allow for super beautiful screenshots.