Hi there, I know the issue of latency is all over these forums. I am having a particularly weird problem with latency only happening with the included Studio Instrument - Bass Guitar. I do not have MIDI latency when using Dimension Pro or when using Session Drummer in X1. So I'm a bit confused. I have updated my AI drivers and the A500S drivers. They were up to date and I simply reinstalled them. I am not sure what is causing this issue. When I use SI-Bass I go with Midi Source and Simple Instrument Track and my settings are for MIDI in and out to be A500S. I wasn't sure if I should have set the A500S as the output. I basically only need to send info. in, but I don't know much about MIDI. I have noted that my AI, the M-Audio Fasttrack C-400 has a MIDI in and output on it. If I had a MIDI cable I would try to plug direct into my AI and see if that reduced latency. I don't have access to a cable and I would have to order one, so if that's the answer I want to make sure. Also I should note that I have tried muting most tracks when I do record the SI-Bass. I usually just keep my vocal and rhythm guitar on and have everything else muted. I don't know if muting does the trick, but with the stats of my PC there shouldn't be a huge issue. I am not a big fan of freezing tracks because I like to keep my options open until the mix is done. I also am not sure if there is some menu somewhere where I can adjust MIDI latency or buffers. If you know of one, please let me know and I'll check it out. The results I am getting are off by less than a quarter note and what I have been doing is going into Piano Roll View and realigning the notes or re-writing the bass part. It works, but it's not what I'd like to spend my time doing. Any help is much appreciated. Ryan