So the ouput errors increase, while streaming.
I am a quite old-fashioned guy, who still uses CD players and UTP cabling for networking, and I have no idea which TCP/IP protocol you use for streaming.
You can see protocol statistics, including errors, with
netstat -s or
netstat -ss. See
netstat(1).
You could try to give a higher priority (negative number) to the streaming process by using
renice(8). Use
top to see the resource usage. You also can use
top to alter the scheduling priorities.