The update from DESPEREAUX works very well in my install, no major issues with the FPS, thank you very much, really appreciated.
For me personally though this mod seems to get everywhere, even paved runways covered in grass and that does not look very good sadly.
My thoughts are that the runways themselves are best left as intended in game using normal textures because the grass is too thick and encroaches onto everything even concrete, the grass and flowers to me are better used outside of them for eye candy on the edges of runway and taxiway to give a little colour and life to the overall scene as they are better than earlier stuff released by others because they spread out over a larger area rather than just around the edge of things so look much more natural.
Anyway, great work from all, really appreciated.
Take care and be safe.
Wishing you all the very best, Pete.