Reaktor Trk 01 , something wrong with the filter

gentleclockdivider

So I am playing with the demo of trk-01 and there is def. something really wrong the filter
When set to 10 Kh z, the frequency is actually the half of it , 5 Khz
When set to max of 16 Khz , the frequency is actually 11 Khz

Weird , so I doubled the sampling rate to 88Kh and intead , the filter now sounds even worse .

Now it's 8Khz when the cutoff is set to max of 16 Khz
Trk-01 was released 7 years ago and nobody ever noticed this , not even an update ?