I am trying to capture a 868MHz transmission using an USRPN210 and a RF900 Daughterboard. My GNU Radio flowgraph with all settings is stated below.
The problem is, when I try to reduce the time scale in the output GUI, the WX waterfall window gets completely stuck (freezes to black). I paste my output below. However, if I not tamper with time scale, the GUI, along with the waterfall and the FFT, continues to run.