A single tab in Firefox opened with Apache Guacamole increases the use of cpu by 4-5% by the coreaudiod demon. If, for instance, I open 5 tabs, the CPU usage of coreaudiod is about 20%. When closing the tabs, the cpu usage of coreaudiod drops to 0%. You need to be logged into Guacamole to see this happening.
The same doesn't happen with Google Chrome.
Any ideas on how to solve this issue?