@Skyguider @Graeme_77
This is exactly the same problem i have, no matter what i do, the fps is stuck at max 20 regardless of other settings. I tried to change the size of the .png files but didnt really help. As well, as you mentioned, when any weather is in the picture the fps is just.. blahh..
But i must also say that i have a gtx970, not 1070 as i stated earlier, sorry that was a typo from thinking while writing but im still getting the same problems it seems as you guys with your 1070s. I can fly any other aircraft really, FFa320, zibo, SSG 747 and so on with good steady fps in most places.
Loading up the tbm in the middle of nowhere with settings down to minimum doesnt help strangley.