uninstall remote desktop update

I am using a Mac Book Pro, running OS X Yosemite 10.10.3. I installed Remote Destop Client Update 3.8.4 on May 19, 2015. Since then my computer can't even keep up with my keystrokes. I would like to uninstall this update please help. Safari is useless. Ap Store is slow. Keyboard is trying to catch up just posting this call for help.