Mackie Onyx Mixer started showing latency problems

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Gjames01
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2013/10/08 22:41:56 (permalink)

Mackie Onyx Mixer started showing latency problems

I'm running Win 7 x64 with 16G.  I have a Mackie 810i firewire mixer.  For over a year I've been running at 128 samples for in and out with the Mackie ASIO drivers without an issue.  I could always use GR3 and record with monitoring on.  On my last project, I started noticing latency issues when recording a guitar track with GR3 monitoring enabled.  I've replaced the firewire cable, rebundled the project, made sure every other process I could disable in my system was disabled, but I can't seem to get rid of the latency.  I've also loaded old projects that were always fine and now they have noise on them during playback.
 
For the current test, I run a stripped down project with only 3 tracks, pre-recorded/mixed drums, a vocal track, and my armed guitar track.  If I press the icon to start/stop the audio engine, just after that, my guitar input sounds perfect.  There is no latency.  Once I press play to play the drum track, I immediately now have latency on my guitar channel.    I have a 7200 RPM 2TB barracuda drive with plenty of free space, and it's defragmented.  My audio driver settings in sonar are the defaults, and I've never had an issue before.  I was using the 1.7 Mackie ASIO driver when this started.  Updating to 1.9 made no difference.
 
 
Any ideas what could have happened or how I can further troubleshoot?
Thanks.
#1

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    bvideo
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    Re: Mackie Onyx Mixer started showing latency problems 2013/10/09 10:51:14 (permalink)
    One thing to check is what audio effects are in your project. If you can play with little or no latency as you say until pressing play or record, there's a big chance you've got a plugin that requires latency because it uses a lookahead algorithm. Sonar uses Automatic Plug-in Delay Compensation (PDC) to make playback synchronized with these effects. Look for the PDC button under the M button in the control bar mix module (X3). Which Sonar are you using?
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    Gjames01
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    Re: Mackie Onyx Mixer started showing latency problems 2013/10/09 11:18:00 (permalink)
    Sonar X2a.  My drum track is bounced down and has no effects.  the vocal track has some effects on it, sonitus reverb, delay, etc.  All stuff that comes with Sonar.  My guitar track just has the GR3 plug in on it.  This issue just somehow cropped up.  Everything was fine for the longest time.  So if I bring it down to just my guitar track and the drum track(with no effects) and the latency starts when I play the drum track, what should I do for trouble shooting?  Toggle the PDC to see if it makes a difference?
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    bvideo
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    Re: Mackie Onyx Mixer started showing latency problems 2013/10/09 17:24:54 (permalink)
    Yes, you can click the PDC button and if it makes a difference, then a plugin is doing it. There are multiple plugs that come with Sonar that need PDC. Someone should make a list.
     
    Edit: here's one
    post edited by bvideo - 2013/10/09 17:33:17
    #4
    Gjames01
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    Re: Mackie Onyx Mixer started showing latency problems 2013/10/09 17:33:13 (permalink)
    My only other suspicion is that it started happening once I started using Native Instruments Abbey Road 70s drummer VSTi.  But I've done a test with that deleted, and it didn't help, so unless that somehow changed a global configuration parameter or registry entry somewhere, I can't see how it could be the issue. I will try PDC, thanks.
    #5
    Gjames01
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    Re: Mackie Onyx Mixer started showing latency problems 2013/10/09 19:53:46 (permalink)
    LP 64 EQ is causing it.  Clicking PDC fixes it.  So I should only apply that plug at mixdown time, as well as any other plugs I find causing the issue?
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    bvideo
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    Re: Mackie Onyx Mixer started showing latency problems 2013/10/10 12:22:30 (permalink)
    Yup, waiting until mixdown time is best.
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    Cactus Music
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    Re: Mackie Onyx Mixer started showing latency problems 2013/10/12 19:31:39 (permalink)
    The LP 64 plugs are look ahead and will cause latency on almost all systems. I keep them bypassed untill mixing. All plug ins can add a little bit of latency, guitar rig is a bad one for me, but not for everyone it would seem. SO safest thing is to bypass all efx bins while tracking so as to not take a chance on being out of sync.

    Johnny V  
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    3 Desktops and 3 Laptops W7 and W10
     http://www.cactusmusic.ca/
     
     
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