I can't comment on the performance of the Star with the cards you are using but I can confirm that with the Atomos cards, it records prores HQ without a problem so far. Trigger works well and it detects 24fps on it's own before the camera even records anything.
How much hand-waving do you have to do?
Bless the Ninja 2, but I've seen it garble cadences plenty before and you look like a doofus shooting a low light (noisy) scene and waving your hand and camera around and it can slow things down a LOT. The accurate/fast 24p detection is soooo important.
I have found the trigger to be pretty reliable on the Ninja 2. Hopefully they improved upon the deinterlacing.