Too low, methinks. Try raising that number to 512, then 1024, and see if that makes a difference.
Originally Posted by hangee_77
This web page is talking about different hardware, but the concepts are applicable here, too:
What does Override Internal Buffer Size do?
The "Override Internal Buffer Size" setting is found in Performer or Digital Performer's Configure Hardware Driver dialog box when the Audio System is set to use the built in jacks on the mac. MAS defaults to an internal buffer size setting of 1024 samples per buffer. This buffer size setting can be adjusted to another setting other than the default 1024 samples. Lowering the buffer size can reduce latency on faster processors. However, the payoff of lower latency will be slower response in Digital Performer. Realistic override settings are 512 or above. Alternately, if you encounter audible pops, clicks or distortion in your audio, you may want to increase the buffer size. You do not want to set a buffer larger than the default.