I hate to say this but...... somehow the patch, which I was actually rather happy(ish) with just doesn't seem to be working anymore.
Lastnight I had great performance with shadows on (Which was new for me) and was able to fly at my proper resolution.....
Today? It has all changed.
In response to this sudden difference, I tried switching shadows off.... went back to the lowest resolution possible, tried even lower settings than before this "patch"..... no difference.
I have now gone from an average fps of 36 to an average fps of 16!!!
BAD SHOW!
Looks like it's back to 1946.......
VERY UNHAPPY WITH THIS