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9.3 Disable power saving option for USB ports
It is recommended to disable power management to the USB hubs, to assure that the controller receives
enough power to work properly. Go to the Device Manager and right click a [USB Root Hub] to bring up
[Properties]. In the [Power management] tab, untick the [Allow the computer to turn off this device to
save power] option. Repeat for each hub.
9.4 Disable power management
Modern computer systems, and especially mobile devices, are engineered for the purpose of saving as
much energy as possible. However, this is often at the cost of the computer's overall performance, making it
more likely to experience audio dropouts. The following should be tried to eradicate energy-saving related
performance problems.
1
Under Windows XP got to [Start] > [Settings] > [Control Panel] > [Power Management].
2
Set the Power Scheme to [Always On] and set [System Standby], [Turn off hard disks] and [Turn off
monitor] to [Never].
3
On laptops, it is not recommended to run the laptop on its battery while working with audio programs.
4
Under Windows Vista and 7 go to [Start] > [Control Panel] > [System and Maintenance] > [Power
Options].
5
Set the [Power Scheme] to [High Performance]. (If this setting is not available, click on [Show
additional plans] first). Then click on [Change plan settings]. On the next page set both [Turn off the
display] and [Put the computer to sleep] to [Never].
9.5 Manufacturer's energy saving tools
Many laptop manufacturers install a proprietary application that takes over the control of the energy settings
of the CPU and other computer components. As a result the energy settings made in the Windows energy
options do not become effective. Deactivate any such application and test if the settings described in the
previous section (power management) then solve the performance issues you experience.
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