Under Windows 8 there is currently a bug that affects many Ultrabooks from the manufacturer Asus.

 

Regardless of which energy-saving plan you are on, the minimum performance status of the processor is always set to 100%.

 

This reduces the battery runtime from 4-5 hours to 2 hours.

 

Remedy:

Uninstalling Asus Touchpad software and thus dispensing with gesture control

 

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