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Q-links in MPC x often lags/hangs

I often have lags or or hanging q-links. I have to wait or wiggle them a bit for them to catch up adjusting the values again. It seems more prone in the controller mode and when the sequencer is playing. Really takes away the feeling of smooth operation.
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  • How much ram do you have and do you have other programs , that could slow your mac down.? Just asking cause when i had my ren it would play beats slow cause of cpu power.
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  • tnx for your reply. No other programs running, 16 gigs of ram. Should suffice. It also happens in standalone, although less it seems. I have to figure out the specific circumstances so others might try to replicate. It feels like a bug though. If it was load related i would expect it to just be lagging, and more so with higher load. But it also happens with simple projects and often this is what happens:
    the value does not change while turning the knob and as long a i keep moving the knob (both ways, fluidly) the value does not change. Only when i stop moving and start moving again does it start to adjust values again.
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  • Hey MeProd,

    Thanks for posting!

    Sorry you're having trouble with that! Have you tried reducing the audio buffer setting in MPC's Audio Preferences menu to see if that has any effect on the playback or performance? If we can rule that out it will help determine what might be going on.

    I would also like to try and recreate this here on my end. If you come across a process that consistently reproduces this behavior let me know and I'll check it out too!
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  • Thanks, No consistent behaviour yet. But it does seem to happen only on values that have not been touched recently.
    I just had it with the track knob after opening an existing project (it happens a lot on the track knob)
    I always have a very low buffer setting. 64 - 128.
    This is what it looks like (this is the drive setting of the Air tube driver). I was playing around to find consistent behaviour. And it did return a few times on the drive value. With or without running sequencer does not seem to matter. Waiting a while does (as if it goes to sleep or something?)

    https://www.dropbox.com/s/l0elx295gq5...

    Oh and while typing this, MPC crashes without the sequencer running.. ;-(

    after restarting this one:

    https://www.dropbox.com/s/xdvmhrihs48...

    As soon as you stop moving continuously, and then turn again, the behaviour is gone

    Oh track length value is also very prone to stuck behaviour
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  • Been working standalone a lot lately and it happens there just as often. Maybe even more often. So it's not specific for controller operation. And as stated before. It happens a lot with the track selection knob
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  • Could you reproduce it? it's super annoying. It happens all the time but it goes away after wiggling that knob for a while.. Standalone, simpel projects. On effects, envelope. Not always but often. I guess when the sequencer is running. But then, i mostly have the sequencer running so cannot really say it does not happen without it running.
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  • I’m Saaaaad
    Any news? It seems even worse with 2.1
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  • Hi. It would be good to know what's going on, since we're planning with the MPC X.

    Being on the mac running the Renaissance, we know that you need specific system
    drivers for High Sierra.You may check the drivers and if you are on the latest OS,
    give it a go with an older system. Also testing a higher buffer (256) could be good,
    we run buffer 64/128 with very good results on macos 10.11.6. (no lag etc)

    But then you have these issues in standalone mode, which doesn't include a mac.
    What's connected to the hardware? Does anything sync in/out? Using the USB as
    a hub etc? We'd unplug everything for testing ..no usb ..no midi.

    Not sure if you want to do it, but you can reset the MPC X to its default settings.
    Maybe things just got mixed up. Before returning/servicing the machine, we'd reset
    the hardware and see if things get better after that.

    PSOUND
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  • I’m Frustrated but hopeful this will be fixed if acknowledged..
    Ok i found it. It is NOT related to processor load. It is related to the touch behaviour of the knob. If you touch the knob slightly (on the side), sometimes it does not register a touch. You can see, because it does not show the value. Then when i start turning, the value is stuck. Check this movie. You can see the hiccups when my touch is not registered correctly. If you grab if firm it happens a lot less, but when you start turning it gently, it happens a lot. It seems there is a threshold for the touch te be registered and when you turn the knob before that threshold is met, the value is stuck.

    https://www.dropbox.com/s/bvaordad9yu...

    PS i checked it in the shop on another MPC X.. the same!
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  • Hi, that's interesting. Since we're not running the MPC X but Renaissance and Touch
    we can't quite compare but check it out in the shop too. When touching the knobs on
    the Renaissance with less care, it accidentally can happen that values of other knobs
    got changed too. A threshold on the MPC X could be the reason to improve on this
    subject. On the Renaissance the knobs have metal caps on top, that seems giving
    contact when dealing. Have you tried touching the knobs on top first before dialing?
    Anyways as said before, better not to much guessing on our site and checking it out
    out for real. A big subject for MPC-X users, the Q-links with infopanels are great stuff.

    PSOUND
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  • Anyone Else can experiment by just trying different ways of touching the knobs and you'll notice the value doesn't always show.
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  • Any update? I tested this on another X that hat the same issue
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  • Hi, we'll test this on a MPC-X in the shops. Could you provide a project?

    PSOUND
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  • It's not related to a specific project. It happens in an empty project too. Thanks for taking the time to test it!
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  • Honestly, Q-Links should just work without providing them any extra treatment.
    Since a standalone unit has nothing to do with computer software and it's many
    issues (cpu,system,cables), your hardware seems not ok. For the price of this
    unit it should work flawlessly. Do the latest updates (firmware 2.2), if it still lags
    we ourselves would really drop it on the stores table or send it back. We'll take
    our projects to the shops in some weeks, at present their units still run on v2.1.

    PSOUND
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  • Ok Akai support (kudos here, excellent response lately, really helpful) have inspired my to dig a little deeper. I have good news and bad news. Good news is i think i might have been able to take away the issue just now. The bad thing is, i changed so many parameters at once, i’m not sure what caused it. I can confirm it is related to the electrical charge of the MPC/your body. I changed the power cable and audio cables, moved the MPCX to another table, took off my shoes, anything that could influence the charge of my body and/or the MPCX and it seems that fixed it. But my suggestion to anyone experiencing the same is to just experiment with anything that could influence the electrical charge of your body or your machine. You might e.g. also check you chair and the floor you are sitting on. I will keep you posted if i find out anything new.
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  • Unfortunately the problem was back the next day and i have not found what the solution was. Still, it should not be such a hassle to find a way for it not to malfunction. I never have this issue with my push2 controller.
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