If you are using a Windows computer and ASIO Audio Interface, and if the Buffer Size or Sample Rate in the Audio tab of Live's Preferences is grayed out this usually means that you need to adjust it in the interface's own control software.
To change the buffer size/sample rate:
- Open Live's Preferences and go to the Audio tab
- Click the 'Hardware Setup' button
- Change the Buffer Size or Sample Rate in the control panel of the audio interface itself