I have an application that uses libiio to configure an fmcomms3 board. When configuring for sample rates < 1Msps, the calibration takes a long time (~6 seconds), and I have observed it time out once. For sample rates > 1 Msps, the calibration is very quick (~50ms). The application loads and enables a filter corresponding to the requested sample rate (one for <1Msps, and another for >1Msps). Why does the calibration take longer for the lower sample rate? Is there a way to speed it up?