Thanks Lucas Bravo ,
I sit well and truly corrected, my apologies. Though I think the point could have been easily made with 1 screenshot, 3 screenshots feels like rubbing my nose in it... and regardless of the definition, it's not what the issue is here, the issue is that the sim used to look as good at 5K as it does now at lower resolutions.
admin,
I realized after sending the above tm.log that I'd been flying at 2880x1440 before I sent it, so I flew at 5120x1440 just now and sent that one, find it attached. I also attached a few screenshots taken at 2880x1440 and 5120x1440, when you look at them at actual size you'll see what I mean.
Thanks again, Nick