Downgrade from parallels 12 to 10

Hi,
I just got a question, can i downgrade parallels from 12 to 10? That new just killin my cpu almost every time i got more than 200% (i have macbook air early 2015) , 4gb ram memory in my mac. I have installed windows10 x86. Can any1 who had almost same problem could help me with it?

 

Hey as for the CPU usage issue, please try this KB and check how it works.

 

@MateuszM1 in order to downgrade to the Parallels Desktop 10 from the 12 version, you can just download Parallels Desktop 10 from Parallels official website and install and activate it with your key