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Topic: playback problems!

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  1. #1

    playback problems!

    When I use 3 GPO players as VST instruments in Cubase, filled with 8 instruments each, I get horrendous lag and eventually Cubase freezes.

    I have an Athlon XP 2200+, 1 gig of ram, plenty of hard drive space - meets and exceeds all GPO requirements, and I'm not even approaching the 8playerx8instrument limit! My computer performs well in other respects, as I keep the junk off of it.

    Any ideas on the origins of these performance issues?

  2. #2

    Re: playback problems!

    Telepathy,
    What soundcard are you using?

    If you know how to adjust the latency of the card, start there. If I remember correctly, a 2200+ is roughly equivalent to a P4 2.2Ghz. If your music is fairly polyphonic, 24 instruments can be quite a load for this processor if your latency is too low.
    Bill

  3. #3
    Senior Member Styxx's Avatar
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    Re: playback problems!

    Having the same problem, I had upped the ram from 1 to 2 gig and the processing speed (which most people said wasn't an issue) from 2.66 to 2.88. Not a big jump but I haven't had a problem in Cubase since or any other program for that matter. Furthermore, I agree latency can be a big issue.
    Just for info sake.
    Styxx

  4. #4

    Re: playback problems!

    Hey guys, thanks for the info...

    I'm using an M-Audio Quattro, which is an external soundcard. It usually performes pretty well. I have it's latency buffer set as high as possible.

    I'd hate to buy more RAM. All my slots are full! EDIT: I checked used RAM while Cubase is running, and I'm only using up over half a gig, so there's a lot of free RAM.

    Maybe it's the processor?

    Cheers for any performance enhancing info.

    SB

  5. #5

    Re: playback problems!

    Quote Originally Posted by Telepathy
    Maybe it's the processor?
    Likely. My guess is that the points in the piece where the polyphony rises are where the processor falters.

    You're not using the DFD feature by any chance? This will eat up more CPU and is not necessary since you have 1 GB, which is probably enough.

    Adding memory will do nothing to improve the performance if you're CPU-bound.

    Try freezing some of the tracks, particularly the ones with high polyphony potential, such as piano, organ, timpani (rolls). Then others if necessary.
    Bill

  6. #6

    Re: playback problems!

    Hey Bill,

    What's DFD? I'd like to make sure that's off.

    Cheers,

    SB


    Quote Originally Posted by billp
    Likely. My guess is that the points in the piece where the polyphony rises are where the processor falters.

    You're not using the DFD feature by any chance? This will eat up more CPU and is not necessary since you have 1 GB, which is probably enough.

    Adding memory will do nothing to improve the performance if you're CPU-bound.

    Try freezing some of the tracks, particularly the ones with high polyphony potential, such as piano, organ, timpani (rolls). Then others if necessary.

  7. #7

    Re: playback problems!

    Quote Originally Posted by Telepathy
    When I use 3 GPO players as VST instruments in Cubase, filled with 8 instruments each, I get horrendous lag and eventually Cubase freezes.

    I have an Athlon XP 2200+, 1 gig of ram, plenty of hard drive space - meets and exceeds all GPO requirements, and I'm not even approaching the 8playerx8instrument limit! My computer performs well in other respects, as I keep the junk off of it.

    Any ideas on the origins of these performance issues?
    Tel, are you using dry or wet instruments? If so, please switch to the dry ones and add FX
    How much polyphony are you using on each instrument?
    Jim
    Jim Williams
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    All Your Bass Sus&Short Are Belong to Us.

  8. #8

    Re: playback problems!

    Quote Originally Posted by Telepathy
    What's DFD? I'd like to make sure that's off.
    It's direct-from-disk streaming, where samples are loaded on demand, on the fly, as the piece plays. It's for memory-constrained environments. The default behavior of GPO is to load all of the samples for each voice when the voice is loaded.

    If you didn't install DFD, it's not on.

    I like Jim's idea about checking the wet/dry. I've completely removed the wet from my GPO install so I don't even see them anymore.
    Bill

  9. #9

    Re: playback problems!

    I was having severe limitations until I found a web site that gave tips on optimizing WinXp for audio. But, I forget the exact web site.

    http://www.google.com/search?sourcei...n+xp+for+audio
    Bosco Adama

  10. #10

    Re: playback problems!

    Quote Originally Posted by snorlax
    Tel, are you using dry or wet instruments? If so, please switch to the dry ones and add FX
    How much polyphony are you using on each instrument?
    Jim
    I do use the wet instruments. I can add reverb to the final mix, but I don't feel that it sounds quite the same. I use each instrument, generally, just as a single line. Sometimes dyads. But mostly minimalistic.

    Cheers!

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