scook
At 44.1 kHz 256 usually results in somewhere around a 20ms delay. 128 is near 10ms and so on. A higher sample rate reduces the delay by filling the buffers faster at the cost of higher CPU and disk usage. It really comes down to what you can live with and how the PC performs. Ideally there would be no delay when monitoring though the DAW but physics gets in the way. My guess is the low limit (the smallest buffer setting) will be obvious, you will experience dropouts and distortion. The upper limit may not matter but extreme settings either way often do not perform well.
I just changed from 256 to 128 and it's much better. I'm testing by putting the Tascam monitor balance in the middle and turning on "input echo" on the track that I'm recording on. At 256, I was hearing the delay.
Should I change the sample rate from 44 to 48 in the Tascam settings panel and in Sonar?
thx
bob