Constant CPU base clock - intel speedstep not working?

[Parallels User]

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[Maria@Parallels]

Hello,
I'm evaluating Parallels Desktop 15.1.2 with a Windows 10 pro (1909) VM on a Macbook Pro (16inch) Core i9-9880h. Everything works fine, except the processor power management.
Taskmanager:
Displays constant 2.3Ghz (the base clock) for all 8 virtual cores, independent of the current load.

I would expect that in idle the cpu clock speed would go done and save energy. Unfortunately the options under
energy options -> advanced options -> processor power management
"Minimum processor state" and "Maximum processor frequency" are missing.
Kind regards.

Could you provide us with the screenshot of the processor state please?

 

[Parallels User]

>>> Message has been deleted by the user <<<

 

[Maria@Parallels]

Thanks a lot for the provided info. Could you also collect the tech report please?
Please collect the tech report right after the issue reproduced and post the repost's ID here.

 

[Dean Herbert]

Can you confirm that host mac is also not clocking down via Intel Power Gadget? If it isn't, your issue may be the same as https://forum.parallels.com/threads/strange-cpu-behaviour-high-clock-speed-low-utilisation.345190/