Thanks again NWP & Buchanan.
I stumbled upon a strange workaround.
I restarted the laptop with the quad capture plugged in. And it played back a heavy project just fine. But, when i tried to play a vst instrument by MIDI keyboard, there was a lot of latency. Upon checking, I realised that though the sound was being generated from the roland unit, the driver in the device setup was set to the onboard device. Hence, a 40ms latency.
This got me thinking and I downloaded ASIO4all… and lo and behold, i can use cubase now smoothly while using the roland’s audio ins, audio outs and midi ports while specifying asio4all as the device. With ASIO guard switched on, I manage a latency of about 16ms… which is ok by me.
I will use this setting for a few days before jumping for joy… hehehe.
Regards