Help troubleshooting

[mntnmn]

Hi, I have the decoder reading stdin with netcat from the output of a LimeSDR on SDRAngel outputting S16_LE bytes on a UDP port. I am using 16000 as the sample rate but I have found this makes little difference. If I record the bytes to a file and look at it with audacity it looks great and plays perfectly. I can not get the decoder to work while I am watching. If I walk away and come back later when I wake up the screen saver there in the console is a whole list of decoded signals. Never while I watch. I am using a Debian Sid (Kali rolling) distro on a 64 bit multi core processor. What are some variables I could put fprintf statements on that would give me the best insight as to when the code sees good/bad at what point so I can figure out what may be happening here? I want to compare what happens while the computer is in saver mode to while it is open, so it can't be something that streams at the sample rate or the like. Thanks