How to install an older CLI version?

Does anyone know how to install an older Ionic CLI version? I just installed 1.5.2 and it’s killing my CPU where I can’t do anything on the computer without a delay. The last version I had running was 1.5.0. Thanks.

for anyone looking for the same thing in the future…

npm uninstall ionic -g
npm install -g ionic@1.5.0

This should be fixed in the latests release. 1.5.4