I am getting this issue too on the X5R via processing the DNG's in after effects via cam raw.
Latest updates on camera/inspire. Running AE 2015.3.
**SHORT ANSWER**
Use a different method.
**LONG ANSWER**
Initially I was not using contrast inside cam raw (as this was widely reported to invoking it) and I was really starting to enjoy cam raw, but then on another clip despite not using contrast its clear some other settings I had tweaked had brought in the same flickering. Given this could have been 1 of about 20+ things, or perhaps 100's if it was a certain value inside a certain slider I did not fancy trying to get to the bottom of it, so I instead checked to see if it was a defective camera.
I then rendered out the DNG sequence untouched and was pleased to report the flickering I could see was not evident. Phew!
So I simply carried out my color correction via other methods and the clip has turned out fine with no flicker.
Big shame as I spent 2 days with CAM RAW and as I said, was very impressed with it.
I don't have the time to look for the problem, especially as I resolved it by simply using another process to correct the footage.
I suggest you guys do the same.