Has anyone else experienced this? I have been having a very disturbing thing happen - from time to time the computer (6 month old Mac Pro flowerpot running El Capitan) will start recording the audio approximately .184 seconds late. This drives me nuts - I'm used to lots of small workarounds of software issues and weirdnesses, but if I can't trust that the DAW is going to record the audio in the right place, that's a big deal. I use an A&H GSR-24 mixer with the Firewire card that is also the interface. Thank you very much for any help you can give.