Sawyer your 20,000Ft figures for 4.11 are way off. in your post 120 You got these numbers:
20,000ft
4.101 – 222kias
4.11 - 160kias
i.e. a diff of 62KIAS
I re tested in both 4.10.1 and 4.11.
F4U1C, 100% Fuel, Rad 2, 100% Power Prop pitch 100%, Supercharger 3 Default, Crimea Midday
I get 220KIAS or 579KMH TAS in 4.10.1
I get 210KIAS or 566KMH TAS in 4.11
A diff of 10KIAS or 12KMH TAS
Wonder Woman view cockpits off with the gaudy circular instruments