If you have an AMD GPU AVOID THIS SIM AT ALL COSTS.
Even reducing graphics settings from ultra high settings and 2560x1600 to 1024x768 and extremely low settings gives the exact same performance.
Expect FPS in the low 20s even with an R9 290x (or 2 in Crossfire). A GTX650 Ti gives higher FPS than my R9 290X.
The developers are claiming excruciatingly poor FPS in this sim on AMD cards is down to AMD ripping out DX9 optimisations since Catalyst 12.XX
This is strange because FSX is a sim that uses DX9 and in no way a AAA game. Funny how performance on that is just as good or even better than Nvidia equivalent cards.
Very poorly optimised game engine on AMD cards.