Hi,

When using pavucontrol on systems with network sinks enabled, the CPU usage on 
all the systems is very high indeed.

I have a network of several machines. Most of them are running pulseaudio 
0.9.14. I've enabled network sinks on all of them, and enabled zeroconf and 
auth.anonymous. Basically I've used paprefs so that every machine can see every 
other machine.

When I run pavucontrol 0.9.7 on any of the machines, the pulseaudio process on 
all of them starts to use huge amounts of CPU - enough to make it quit on slow 
machines. I've now built pavucontrol 0.9.6 from source and it does not produce 
this problem. 

I've noticed that, when 0.9.7 is running, there is a lot of network traffic 
even when no audio is playing. It makes me wonder whether the cause of this 
problem is the vu-meters being displayed for all network sinks.

Mark
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