Nuendo 5.5 crackling

Nuendo
1

Hi all,

Today there is something weird that’s happening with N5.5 on my Mac. When I open a previously saved project and play it, I hear significant crackling sounds. It does not matter whether the project contains just 1 track with no VI/VSTs or 30 tracks. The sound however goes away after 5-10 mins but comes back occasionally. ASIO meter shows around 30% utilisation and the LED it lit in light orange color. I am not streaming any samples but all audio tracks from a separate 7200 RPM SATA drive (OS is on SSD).

I tried setting up audio priority ‘boost’ in VST settings but that didn’t help either.

I can’t believe if this is supposed to be happening due to high CPU utilisation or disk bottleneck, as I can more than 40 tracks in Logic on the same Mac.

Has anyone else observed this behaviour? I’d much appreciate if there are any potential fixes to this issue…

Cheers!

2

what mac?
what i/o?
what os?
what buffer setting?
etc etc

3

Hi maxhowarth,

Its MacBook Pro 2.3GHz i7 QUAD
2 internal SATA drives: 1 512GB SSD and the other is 7200 RPM HDD
The issue reproducible using MBP’s internal sound card (using BeyerDynamic DT770 Pro 250 ohm headphones)
The only IO is a USB hub which contains eLicenser and iLOKs
Snow Leopard
Buffer size is what’s default, I haven’t changed it (256?)

4

could it just be the disk? try playing back from the project from the ssd (or an external drive) as a test.

and try changing the buffer to see if that helps. at least it will narrow down the possibilities.