How to reduce abnormal CPU usage.

I've been using Live for years, and I know (or think I know) all the tricks for reducing CPU usage. But I've run into a problem recently that I can't figure out.

When idle, Live routinely displays 20% in the CPU meter after loading a song (and buffering), and then bumps up to 70-80% while playing 5 or so audio clips. When I create a new set, the CPU meter is low, but holding down a chord on Operator creates a CPU spike to 20-30%. 

I erased my hard drive and reinstalled OS X (El Capitan) a few weeks ago, so any OS indexing should be finished by now.

No other programs are running, and WiFi and Bluetooth is disabled. kernel_task is running at normal CPU levels. My buffer is maxed out. I have an Intel i7 chip and 16GB of RAM, and a 1TB SSD that's only 20% full. Pretty baffled at this point! Any ideas would be much appreciated.

7 followers

thecampbell 2 years ago | 0 comments

5 answers

  • REJACK
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    1 answer
    2 votes received
    2 votes

    Im having the same issue!

    11 months ago | 0 comments
  • SoMichael
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    1 vote received
    1 vote

    Same. I been using Ableton for years and around a month or two ago it's been eating up CPU usage.

    11 months ago | 0 comments
  • roymerchant
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    1 answer
    1 vote received
    1 vote

    Snap... Cant run a proper session now. 10-20% then spikes up to 90%ish with a drop out...

     

    HELP ABLETON..!!!

    9 months ago | 0 comments
  • kontyx
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    1 answer
    1 vote received
    1 vote

    I'm having the same issue. I've been using Live for years. Runs well on my older iMac, but my new powerbook (more powerful than my iMac) is consistantly suffering from cpu spiking over 100%. It's basically unusable. The laptop was purchased specifically for using Ableton in live settings, so yeah, any help would be great.

    9 months ago | 0 comments
  • pedroconforti
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    2 answers
    2 votes received
    1 vote

    Same here. I have a 4 core 2.7 i7 Ivy Bridge 16Gb MacBook Retina 10,1 with a 768Gb SSD which used to run smoothly and now frequently gets pretty much unusable with Live 9.7.6.

    I am not sure of how long ago this problem started but I guess around one year. The reason I am not sure is because I haven't been using this computer for music so much during this period, but now I need to. 

    Since I got a new audio interface for this MacBook around 6 months ago (iConnectivity's Audio4+), I was guessing it was the culprit, but I haven't had the time to do some extensive testing. But today after a LOT of testing, I definitely ruled the interface out, since the problem will happen even with a single drum rack channel and using the computer internal audio as audio output. 

    If I play a single midi clip on a drum rack as the only channel in a clean Live session, with no other programs running, wifi, bluetooth AND spotlight off and right after a boot, the CPU load will start at 20% and in about 10 seconds will be in 110%.

    To make things more complicated, sometimes the problem will disappear for some time and then come back.

    Activiy monitor does not show such overload. I tried changing interfaces, buffers, bits, upgrading drivers, nothing will do. What is going on? Please help!

    1 month ago | 0 comments

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