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I am not with Laminar Research.
Have a look at the following answer provided by Laminar Research 4 days ago which can be found at http://questions.x-plane.com/13203/x-plane-11-05r2-%26-osx-high-sierra
Hope this helps.
thanks for your answer! Well, High Sierra was published some days ago - it's available for everyone now, not only for developers.
By the way, I just did a fps performance test ( http://www.x-plane.com/kb/frame-rate-test/ )
and got 48 fps with test code 1 and test_flight_c4.fdr , that seems pretty good.
After that, I restarted X-Plane 11 and got about 22 - 35 fps depending on the aircraft. So that looks like the frame rate is varying from time to time - for what reason ever.
Hope this may help, too.
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