The Latency while you are playing depends on how fast your your Computer is. I use it with Logis as Audio Instrument and when I play with a polyphony of 91 tones it is quite slow. When I decrease polyphony down to 25 tones it works o.k.. And when I hear the playback there a zero-latency.
Subject: Re: So you are using this through Pulsar right?
Logic Audio 4.6.1 with Pulsar I (ASIO2),when using ES1,EXS24,B-4,Pro -52,got no problem with VST,hard to notice the latency,but important u have to used "ASIO2-24 or 16" not EASI any driver..
PIII800
256 MBRAM
4G HD SCSI
MATROX G400 DAUL HEAD