[Discuss-gnuradio] USRP Underruns "UUUUU"

Hello,

 

I want to solve the underruns and overruns problem and I’ve attached my GNU Radio flow graph and the CPU Usage when it is running. From the CPU Usage image, is the bottleneck the VCO? And if so, I must do some parallelize of the block somehow right? And how can I do that or is there other better ways to solve this U’s and O’s issue?

 

Thank you in advance!