Hi,
Is just tried the alpha preview, and it's already a really well polished product, the UI is great (this panel that you can freely drag and place in the cockpit is a great idea).
... but the performance is terrible. With every setting set to minimal, I can barely reach 30 FPS in game and 40 FPS for timewarp, which is pretty unplayable.
I tried with oculus runtime 0.6.0.1 and 0.6.0.0, same result. I've tried fiddling with the graphic settings but nothing helps.
My specs:
i5 2500K
Nvidia GTX 980 (driver 347.88)
16 GB RAM
Asus PG278Q at 144Hz
Windows 8.1 64
FSX Steam Edition