There is a distinction between the internal fps setting iClone uses for timing, which is always 60 fps (i.e., 60 frames equals 1 second), and the frame setting for rendering, which may vary. So if you render at 30 fps, you will get 750 frames.  

That's how it always has worked in iClone. I have no problem with it.

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I had similar issues when I tested Iclone.

Why is it that my timeline is set to 1500 at 30 fps plays back fine in iclone but only renders half the frames. If I render it at 60fps i get the full 1500 but it is slower. This makes not sense.
It seems like what your project is setup to is what you should get.