I'm Using Sonar X3 Studio And A Focurite Forte As My Audio Interface. I Have A Vocal Track That Has Nectar Elements Applied To It That Stutters/Pops/Clicks At Some Points When Pitch Correction Is Engaged. I Contacted iZotope Support, And They Told Me To Increase The Buffer Size To Allow More Processing Power For The Pitch Correction. I've Tried Doing This, But The Options For Increasing The Buffer Size Are Grayed Out Or Disabled In Sonar. My Focusrite Forte Is Using An ASIO Driver. Has Anyone Had A Similar Experience With Nectar Elements?
 
Thanks!!

I don't use a Focusrite audio interface, but you should be able to change the buffer settings in the driver software for your card and Sonar will follow along with the changes.

Yup check the driver software.
 
First thing, regardless of whether you have the latest version or not please uninstall and install latests driver:
http://uk.focusrite.com/downloads?product=Forte
 
As it's a USB driver install the latest chipset drivers for your motherboard, if it's an intel motherboard goto intel autoupdate. I would also update to the latest BIOS from your motherboard manufacturer.
 
Sometimes deleting AUD.INI resolves things (check these forums/google for details)
 
Finally get latencymon out (although this won't help the "greyed out" issue):
http://www.resplendence.com/latencymon
 
Plenty of examples on how to use it in these forums.
On your next post should you require it I suggest you list your full system specs.
 
Ta.