I gotta say that I'm so happy with the new update of SMP. It actually increase my FPS, and I have NONE crash at all. I had so many crashes with SMP 3.
It's all cool in standard default settings. But since I'm a Airliner, I decided to increase the clouds coverage. It's still working fine, I've got probably a drop of 3-5 frames when really cloudy. But the problem is that when I move around, or if I change view, or if I try to look at the MCDU, or move the view. It gets so slow, and the frames drops to 3 to 5 frames per second, and after a few seconds back to normal which it'd be around 30-40fps, but if I try to change the aircraft it just drops to less than 1fps that I have to quit X-Plane 10 and start over.
Usually with defaults settings, the area of memory and performance it says I have about 10-50mbs Ram Free, and when I apply a way bigger clouds coverage it says I have now 1200-2000mbs Ram free.
I'm Running X-Plane 10.51, Mac El Capitan, 16gb ram, and 1gb video card. SMP usually says I have about 50mb free of Video, it never changes, not even in photoreal scenery.