Sonar4.0 - audio rendering lag

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bigspace

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Guys - a Sonar 4.0 question. Couldn't find anything resembling this in the Cakewalk site, so...

Conditions/system:

- Sonar 4, running fine, doesn't crash
- WinXP, 256 Ram, 1.0ghz Athlon chip
- 30gig separate drive just for Sonar, at least 15 gig free

Problem:

Up until a couple months ago, any audio recording or Normalizing (command) on audio clips were speedy, no lag. I noticed the the very first clip recorded after opening a project went through a big of a lag, I figured it was setting up a buffer or something, as all subsequent recording/audio modifying had no lags to speak of.

Recently however, there is a constant tendency for the system to lag after (sometimes) recording a clip or (always) modifying it with Normalize. I'm talking a 15 second clip takes 45 sec/1 minute to finish rendering.

At first I suspected this was happening only in big projects where there were a lot of real-time track effects running, I read about that. But I tried recording/altering a clip in a brand new project, 1 track, and it still does it (even after closing Sonar and reopening, etc).

It is getting very aggravating. I don't know what could have precipitated this as nothing has changed on the machine. No new software, nothing. There are getting to be a goodly amount of audio files stacked up from the variou projects, but I don't see why that would affect it. The thing is not hitting the hard disk during this delay, it is all going on in memory (i.e. no hd LED flashing during the wait). I have updated Sonar with a couple of patches since the purchase, can't remember what the latest one was.

If you have any suggestions, please pass 'em on. Thanks.
 
I'll refrain from commenting on the use of the Normalize command... ;)

When you say "finish rendering," are you describing the drawing of the waveform? If so, the problem is most likely that your picture cache is full.

You can increase the size of the cache by editing the Aud.ini file. Find the line "PicCacheMB=XX" and change the setting from 20 (default) to 100 or 200. That should alleviate the problem.
 
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