I can see 'Smooth' in the Curve Editor, but it's flaky at best and a very blunt tool with no real control. Can we please have a frame reduction algorithm in the main iClone timeline - ideally something that can be applied to individual key layers, rather than just to a whole clip.
A few different filters would be ideal, as Motion Builder does, i.e. a simple smooth, delete every nth frame, Butterworth filter (to reduce noise without smoothing out peaks) etc.

                                    

Unity Virtual Reality Developer