My fps is capped at 6!

So basically , I saw that razer cortex could boost your fps so i downloaded and made a account. So i loaded up Geometry dash and i was running fine. Then i turned of vysnc and my fps was still capped so i restarted the game. Then i was capped at 6 fps (the game took a min to load). So when i quit cortex everything was back to normal. Can anyone help?