Yosemite VM Very Slow (Lots of Beach Balls)

Hi,

I am using Parallels 10 on my iMac. It had been working fine....with two VMs....a Windows 7 VM, and an OS 10.9 (Mavericks) VM. The Mac OS X VM was created to have a "roped off" work environment.

I updated both the host iMac and the OS X VM to Yosemite.

The Windows VM had no noticeable changes in performance (seems to be fine), but the Mac OS X (updated to Yosemite) VM is noticeably slower, with lots of spinning beach balls.

This was a problem i had a long ways back, that just went away of its own accord (probably due to fixes/patches). Am I alone here, or are others with Mac VM environments noticing the same thing?

Thanks in advance
Kenny in NJ

 

I have exactly the same issue in similar scenario, the difference is that I'm using a macbook, Windows 7 VM is fine, OS X Yosemite VM is very slow, also with maximum performance.

Max

 

solved! installing "parallels tool"

Max

 

i have same problem and have deinstall and install again but nothing cpu usage is always over 100%