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  4. Vista 32-bit Pops and Crackles

  • Vista 32-bit Pops and Crackles

    T
    T

    Please Help!

    I've just installed VI Special Edition on a Vista 32-bit PC and am getting lots of pops and crackles. Other plugins work fine standalone or in large Cubase projects with ASIO buffers down to 128 bytes but I get some clicks from VI even with a fresh project with only one Cubase track with one 70MB matrix loaded (Flute1)! The problem is definitely worse at 256 bytes buffer size (my default) but does not completely disappear even at 1024 bytes. The clicks coincide with the red light flashing on the Cubase VSTi performance window.

    The PC is dual-core with 4GB RAM (3.58GB available), 4xSATA 7800rpm drives, Audiofire 2 (ASIO). I use Cubase 4 as the sequencer. All software and drivers are at the latest version. Most Vista 32 audio optimisations have already been done or tried (indexing off, b/g scheduling priority, startup services minimised, built-in sound disabled, pagefile min=max). The various Cubase audio device options (disabling multiprocessing, enabling boost, etc) don't seem to fix it either.

    The samples are on a dedicated eSATA 300 disk. I've tried moving them to one of the internal SATA 300 drives but get the same problem. If I replay the same notes over and over again the clicks mostly disappear but not always for every note. So, unless VI flushes out recently used samples when there is plenty of RAM it would not seem to be a disk problem. There are no other apps running at this time and about 1GB of RAM is in use (according to Task Manager).

    This problem also occurs for VI standalone - in fact it is worse. So, I'm not sure Cubase is at fault here?

    Any ideas? Please help me?

    Tim.
  • T
    T

    Well, I though I would post a reply in case anyone else has this same problem. After many days trying different ideas, as a last resort I thought I would try Vienna Ensemble and confirm that the problem also occurred there - but it doesn't and in fact works a treat! I have just run 16 instruments simultaneously, all continuously changing notes quite rapidly in performance legato in VE as a plugin to Cubase without any dropouts at 256 byte buffer size. During this, the Cubase performance meter for ASIO barely moved beyond about 10%. VE had 2.0GB samples loaded and CPU was at the 30-40% level.

    I'm not sure why this is the case (VI built with an older less Vista-aware SDK than VE?) but I am not complaining as I now have a workable solution.

    Tim.