Today I will show how to speed up Mac OS X op.system on VMware and VirtualBox.
1) First of all download this software. to your OS X op.system.
2) It is a zip file, simply double-click on it to unzip it.
3) Now you can see a "beamoff" app, simply double click on it and wait for a little. After seconds, you can see that your OS X is working very fast now.
4) But now we need to add this app to autostart program's list.
5) Open up "System Preferences" on your OS X and go to "Users & Groups".
6) If you have more than one accounts then do the same process for all of them. Go to "Login items" tab and press on "+" icon to add a new autostart app.
7) Now in browsing window navigate and select "beamoff" app you have downloaded, select it.
Now it will autostart with your OS X and your system will work fast and without lagging.