A big thank you goes to the IL2 team
The patch is fantastic,the sim is running smoothly on my PC now at medium settings. I get 30 FPS over land and over the sea I get 60FPS
The only problems I have noticed is that grass does not appear when I select it in the options, and the building textures appear to take a long time to load in, so buildings are left untextured for a while after coming into view.
My GPU memory and GPU processor are both maxed out at 100%, and all 4 CPU cores were running at about 25%. I run the game at 1280 x 720 resolution, since my 1GB GT240 GPU is just not up to running it at full resolution.
I find that reducing texture to 'High' helps me to get better frame rates.