On 31/01/2014 10:58, Hendrik Schreiber wrote: > This smells like App Nap. > See http://krypted.com/mac-os-x/disable-app-nap-in-mavericks/ > > -hendrik > I'm just testing it with AppNap will report back later, if this doesnt fix it I'll dig out by 10.8 machine and see if the problem occurs there as well Paul