P9 and Yosemite

Have checked threads but could not find this issue.
OK, upgraded to Yosemite. Am running latest version of P9 on a new (2013) iMac. P9 is very slow and sluggish. Is this a known issue that will be solved with upgrading to P10?

Just bought P9 in May and have been holding off buying P10 so soon after initial purchase.

 

This is being tracked in multiple threads. You may want to look at this one first:

http://forum.parallels.com/threads/parallels-10-running-slow-on-yosemite.326205/

This is more related to Yosemite and mid 2011 iMac machines running PD9/10.