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If you can access your computer BIOS, it is recommended to disable all power management features of your CPU, as this implies changes in the CPU speed and that is far from optimal for any audio application.
Same applies to overclocking.
Please have a look at your motherboard manual to locate those settings, may vary depending of the manufacturer.
Intel Turbo Boost Technology: Disabled
CPU Enhanced Halt (C1E): Disabled
C-State Support (C3, C6, C7, C8 State): all Disabled
CPU EIST Function: Disabled (also called Intel Enhanced SpeedStep, that should always be disabled)
CPU power saving mode: Disabled
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