Cubase Vst 5/32 Vs Delta Audiophile 2496 Options

I´m using Cubase VST 5/32 with a Delta Audiophile 2496 Soundcard and there´s a problem:

The card will play the sounds just fine for a few minutes, but after a few minutes, it starts distorting the sound, it gets all cracked up, and it keeps growing so in the end it´s totally useless.

I have tried running the sound through the Sound Manager and that has been fine.

Since the "support team" at Delta didn´t respond to me when I asked them for tips and hints, I´m hoping someone here might be familiar with this. I also tried replacing the ASIO drivers, but the same thing happened.
I also tried using the Audiophile as the output in the Sound Control panel instead of the default built-in soundcard.

Nothing seems to help.

Can Quicktime be part of the problem?

can someone help or offer advice?

[gdoubleyou]

Are You using OS9? if you are ensure that virtual memory is turned off.

The settings are found in the memory control panel under the Apple menu.

G-Dub

[Zygen]

Same shit different name...
I'm running a Sonnet G3 450Mhz/1M processor upgrade + Audiophile 2496 on a old 7600 with OS 9.1 and experiences the same sound degradation when playing audiotracks in Cubase 5.0 VST/32. The problem seems to be related to the use of effectsends. Turning these off stops the "crackling". Closing and reopening the songfile also stops the crackling and allows playback for a couple of minutes. The strange thing is that the crackling starts even the CPU load is only around 50 percent of maximum. If this is a CPU load problem shouldn't the meter hit the ceiling first? Could the problem be caused by to slow harddrives? I'm using the correct ASIO2 driver and the sound is great while it lasts...

Help us solve this baby.