These settings slow the server performance.
In particular, the SoundIncoming setting can halve the performance!

Config:/Console/
Setting	Explanation	Default / Example	Data Type	Access R,W,A,D
Hidden	Set to TRUE to hide (minimise) the console display window at runtime. Note: this currently has no effect.	No	Integer	R,W
Sound	Set to TRUE to enable sounds upon various conditions.	Yes	Integer	R,W
SoundIncoming	Set to TRUE to enable sound upon ALL incoming connections. This will halve the performance of your server!	No	Integer	R,W
SoundNonIdle	Set to TRUE to enable sound whenever an incoming connection arrives when the server is in an idle state. This will reduce the performance of your server!	No	Integer	R,W
SoundStartup	Set to TRUE to enable sound whenever PowerWeb starts up. This can be useful when you want audible notification that the server has restarted successfully after a configuration change. There is no lasting performance impact.	Yes	Integer	R,W
StartHidden	Set to TRUE to hide (minimise) the console display window at startup. Note: this currently has no effect.	No	Integer	R,W