Positional Rep Animation Stuttering

[JOLLYAL]

Program: Inventor Professional 2014

On a small assembly, the positional rep animation runs smoothly from one constraint to the other.  But when I incorporate a large assembly the animation stutters and is jerky between constraints.  Any ideas on what the problem could be and how I could improve the 'FPS' of the animation from one constraint to the next?  I recorded a vid showing the differences between a simple assembly and a more complex one.  Could it be the limitations on my graphics card (Nvidia FX3800)?  Maybe my constraints are too complex?  Or possibly the appearace of the materials?  Let me know if I should supply more information to help solve this problem.  Thanks in advance.

http://www.youtube.com/watch?v=i2pGldJvNUo

[JDMather · Accepted solution]

Is that simply a screen capture of the animation player?

Actual Render recording of the animation should be smoother than using the Animation Timeline Player. (offline vs realtime)

You can change the Frame Rate for Recording.

Real time is dependant on your graphics card, complexity.....

[JOLLYAL]

Correct, I'm using an external video recorder (XSplit) to record this animation.  

My goal was to show a video of the positional constraints in an animated form rather than rendering the animation.  If I were to render this animation, would the finished product be smoother (depending on the FPS I use)?  I was looking for a faster result than waiting for each frame to render and stitch together to make a video. 

Edit - the full animation is 22 seconds long, and if I run at 10fps with the lowest anti-asailing on, it tells me it will take about 5 hours to render this animation at 640x480.  I was looking for something that could take a lot less time and still look smooth during a screen-recording.