I have version 10.5 of Alpha Five so I can maintain some databases. It ran fine in Parallels 10, but in version 11 it is very unresponsive to keyboard or mouse input.
Hello Mickklass, Please try reinstalling Parallels tools as steps suggested at http://kb.parallels.com/4841 and addition to this please refer to http://kb.parallels.com/112983 to trouble shoot third party software issues.