[Daniel_H]

Thank you very much. I'll look into DMA.

Also, I tried running an IIR filter in my computer instead of cRIO, creating a blank VI. I put a knob as an input and a second order lowpass and started flipping it around to simulate a signal. I found the same problem as in running in cRIO in a frequency as low as 1kHz .. should I experience that in an I7 processor?

BTW, I also tried using a timed loop in this blank VI and the max frequency available to me was 1kHz. The 1MHz clock is shaded and can't be selected, why? Is there a way to enable it?
I noticed the 1MHz is available in cRIO, I'll see what can be done. Maybe I'll achieve higher rates with it (?)