Did some quick tests with the average FPS results below:
PC res. 1680x1050x32b-60Hz,
Video preset: Medium
Before the Patch
1680x1050 Full Screen Over water 7
1680x1050 Full Screen Over London 4
1024x768 Windowed Over water 21
1024x768 Window ed Over London 13
With beta Patch
1680x1050 Full Screen Over water 8
1680x1050 Full Screen Over London 5
1024x768 Window ed Over water 20
1024x768 Window ed Over London 10
There's room for improvement...
