Input signal only noisy when loop_rate is used

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Hi!

I'm having a problem interfacing a Novint Falcon with ROS. Simply put the input signal (position of the static Falcon, held down by gravity) has sporadic outliers when ros::rate loop_rate(1000) is in my code but without it, the input signal is perfectly constant.

Here some raw data without loop_rate(1000):

Position= 0.00464177 -0.0505329 0.0881456 count 878
...
Position= 0.00464177 -0.0505328 0.0881457 count 4800
...
Position= 0.00464177 -0.0505328 0.0881457 count 6176

Here some raw data with loop_rate(1000):

Position= 0.00433312 -0.0506089 0.0981003 count 2345
Position= 0.00433312 -0.0506089 0.0981003 count 2346
Position= 0.00433312 -0.0506089 0.0981003 count 2347
...
Position= 0.0377182 -0.0168843 0.125321 count 2352
Position= 0.037807 -0.0167192 0.125306 count 2353
...
Position= 0.0043431 -0.0504322 0.0981873 count 2359
...
Position= 0.037718 -0.016885 0.125321 count 2373
Position= 0.037718 -0.016885 0.125321 count 2374
Position= 0.00433312 -0.0506089 0.0981003 count 2375

I haven't been able to find any returning pattern or consistency in when it is happening. As can be seen from the pipe above, it happens at random moments in time (sometimes nog for a few seconds, sometimes twice a second). Is there something about loop_rate that i'm overseeing? Is there a better way to do something like this? Any ideas are welcome :).

I used the open source drivers (nilibfalcon) and the only rosfalcon package I could find online (cyphy_rosfalcon) to create my own node uses the funtion: Pos = m_falconDevice.getPosition() to get the falcon positions.