Windows 7 very slow in Parallels Desktop 11 on Mac running El Capitan

RobertA4

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Screen Shot 2016-03-21 at 9.34.06 AM.png hello,

i have upgraded a mac to EL Capitan (reformat HDD and reinstall Mac OS Fresh).
i have a Windows 7 VM and it works fine on Yosemite but not on El Capitan.
VM is configured as follows: (that worked flawlessly on yosemite)
Optimization = faster virtual machine
CPU = 2
RAM = 4GB
Graphics = 512MB

Host machine model is iMac14,1 (2.7GHz Intel Core i5, 8GB RAM)
please see screenshot for the prl_vm_app cpu usage...

running Parallels Desktop 11.1.2
 
Hello Robert,
The reason why numbers are different is that Mac and Windows calculate CPU consumption in 2 different ways:
In Windows: No matter how many CPUs you have, if you have (for example) 6 CPUs installed, the total consumption of all 6 CPU resources will equal 100%.
In Mac: Multiply the number of CPUs you have by 100%. For example, if you have 6 CPUs installed, the total consumption on Mac will equal 600%. Please refer to this article. Thanks!
 
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