Black Rooster Tape Echo - not working at regular latency

[AB99]

Hi Everyone:
I downloaded the Black Rooster Tape ECHO - 201 - 
At any low type of latency in sounds like a machine gun.  When I increase the latency, way beyond anything I use for any other plug, it is fine.  

Any thoughts why this particular plug is having issues?  Is there a setting in Cakewalk I need for this to work correctly?

Thank you!