STRANGE SYMPTOM OF MY PERSEUS RECIEVER WHILE RECORDING

   This video shows the strange symptom of my Perseus receiver.  This occurs suddenly only while recording and it cannot be stopped until I restart the program. My PC is Lenovo X201 with 256GB SSD ,4G RAM  and core i5 CPU.  I encounter this phenomenon when I use an external HDD through USB3.0 interface too.
   I hate this problem because my midnight MW DX recording becomes ruined. I would appreciate if you could tell me any solution for this problem.

Postscript information (Oct.24, 2016)
According to Perseus SDR HW &SW Group of Yahoo,  This problem seems to be occurred by increment of CPU load or a USB3.0 driver problem. I am still checking this symptom.