Audio stuttering in MacBook Pro and iMac - Firewire....any fixes?

Discussion in 'Digital Audio' started by mach1ne, Jun 9, 2014.

  1. mach1ne macrumors newbie

    Oct 25, 2011
    Glasgow, UK

    Apologies if something similar has been posted elswhere here on macRumors.....I just haven't found it.

    Looking for some help.

    I have a MacBook Pro (2012) and an iMac (2013), both of which are running through audio interfaces, the MBP via Focusrite Saffire Pro 14, the iMac via Presonus StudioLive 16.0.2

    Both interfaces are connected by Firewire.

    When in Safari audio on websites like soundcloud, bandcamp, your-army and so on is hugely distorted. However, players in work fine. The only time the audio stops stuttering and clicking is if I open up my DAW (either Ableton Live or Logic or Pro Tools) at the same time as the browser is open..... but then this only lasts around 10 minutes before the audio starts crackling again. Ideas?

    I have researched this (A LOT) and seems Apple know about the issue but haven't fixed it (see here:
    or here:
    and here:
    with the longest thread of the all being this one here:

    It looks like it's EITHER to do with the Fusion Drive OR a Firewire issue.

    So, I managed to find an update for driver software for the Saffire pro 14 and audio in Safari now works fine.....but not for the Presonus.

    Other than waiting to see if any presonus drivers resolve the issue does anyone have any ideas what I might be able to do. The reason it bothers me so much is 1) because I DJ and need to access a lot of promo digital material online before reviewing or purchasing (if I fail to review I get struck off the promotional mail outs) and 2) because this is expensive kit I'm using and why should I switch between browsers to hear music?? I'm appalled by it as much as I am by Apple's lack of response to the problem.

    But I'd be grateful for anyone else's input.

    Thank you
  2. ChrisA macrumors G4

    Jan 5, 2006
    Redondo Beach, California
    Several things are going on here...

    I think Apple's quest to save battery power has killed the responsiveness of audio software. Certainly you need to turn off (disable) "app nap" This feature turns off apps running in the background.

    For some reason fusion and firewire don't work well together. Apple has pretty much abandoned firewire.

    I seem to get better results when EVERYTHING is the same audio format. Inputs, outputs and so on. Set it all to 16-bit/44.1
  3. mach1ne thread starter macrumors newbie

    Oct 25, 2011
    Glasgow, UK
    thanks Chris

    I will try this and see how I get on....anything is worth attempting....whether it's a firewire issue or not.



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