DJ Ze Mig L,

that was my thinking that it was very low. To be honest, I haven't played around with any of the settings since my laptop and soundcard came from the shop. It was et up for "optimum" performance - Nusystems is the compnay I bought it from. It was only the other day when trying to set up headphone monitoring in Ableton that I noticed the buffer size...
Like you, it made me think that it was set very low, and that I could significantly give my system a bit of a helping hand by increasing the buffer slightly... Things is, I can't.

Don't get me wrong, I'm clueless about this kind of thing, and my apologies to nova for sounding a bit tetchy earlier (I was!!!!) ], it's just I'm sure my set up could be a bit more flexible performance wise if I could get this to work.

As for trying with other sequencers, I don't have any handy.
At closer inspection though, I can't alter the buffer size even before booting up Cubase or Ableton, so likely it is a software issue with the soundcard....

BombJack