increasing latency during a (recording) session

through the years I've experienced this: you start a sessions with DAW X and audio interface Y and MIDI interface X. You made the best buffer, samplerate etc. settings to have as little audio and/or MIDI latency as possible. I do understand the concept of latency.

However, the one thing I could never solve is the fact that latency tends to *increase* during a session. The only solution for that for me has always been saving the session, rebooting the computer and start freshly with the saved session.

My main question is: what is causing the latency INCREASE during a session? Example: I record let's say an Omnisphere track and play it with an external midi keyboard. After a few recording takes (not adding tracks, but re-recording the same track a few times), latency has clearly increased, so much that I have to reboot. Why? (I am using the newest MacBook Pro with 16GB RAM and a MOTU 828X audio interface)
And is rebooting the only "solution" to bring it back to it's "start" latency? Or are there better ways? This puzzles me for years now.


scd2013 11 months ago | 0 comments

1 answer

  • finstrel
    2 answers
    2 votes received
    1 vote

    10 months and no response :( Bad. Ok, l don't know the answer, but I had the same problem recording a 3-minute track. In the beginning there is no latency at all. After 3 or 4 takes (12 minutes) the latency start to be noticiable, then after 30 minutes it was almost 1 second.

    I am using a Mac Mini with 8 GB and a Focusrite Saffire Pro 14 connected via Firewire. I am using all 4 input channels from Saffire and each one is being recorded in a different Ableton track.

    Can't figure out why latency is increasing, but I have a better workaround. When latency starts to beign noticiable, go to Ableton Live preferences ans set the buffer size to a different value, than go back to previous one. And boom. Latency disappears. Don't know why. Does this "clean" the buffer? Is it a bug in Ableton? Don't know. But it works.

    Maybe in a live performance I could do this in between the songs. But I don't know if it happens when I'm not recording a track. I mean, if I just capturing the audio without record the track.

    19 days ago | 0 comments

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