(tip to the talented devs: I'm sure when people click 'optimize for parallels guest' when your installer asks, they don't actually mean 'give parallels absolutely 110% of both cpus to the point where osx stops responding altogether')
Hello, our developers have been working hard on this problem. And in our latest update it was considerably improved. Function "optimize for parallels guest" has nothing to do with CPU, because it optimizes Mac OS file cache for Parallels. Best regards, Stacey
Thanks for the clarification. Just, when everything bar one app stops responding the first thing one assumes is that said app is hogging all cpu time. I'm glad to see that it's being worked on.