Brand new project I started this morning...created about three tracks (with two VSTi's) and then went to record a fourth track and all of a sudden SP has this midi (or audio, I am not sure) latency  - about 25ms I estimate, when it SHOULD be 5.8 according to preferences. This is so bloody frustrating...as it really seems random. And the latency is not restricted to just recording the track, it also is evident when the track is played back. Opening and closing the project doesn't fix it nor does re-booting both the PC and audio/midi interface.
 
Any ideas?
 
And I just discovered it is also now only receiving over MIDI channel 1 - no other channels work.

For such occasions it would be really helpful if Sonar showed current pdc used.
 
Either way, did you try activate pdc on control bar?

Not enough information given in order to assess and help. What instruments and what plugs?
 
Some plugs have a defined pdc in order to operate correctly, such as a linear eq. Even if you have a low ms count for your driver, the plug will add to it.

Transient shapers and limiters often have a lookahead function that delays everything. They are intended to be used while mixing.

Well I think I have narrowed it down the the LP-64 EQ  - everytime I insert it into ANY track, the latency happens, remove it and it goes back to normal. As I said it doesn't even need to be in the track being recorded. Weird!!

ANY plug-in on ANY track or bus which uses a look ahead buffer must affect the whole project. It has to work this way or the tracks would not be in sync. The only time this is not the case is when the track with the plug-in is archived or the effects bin containing the plug-in is disabled. Disabling the plug-in alone is not enough.

The LP-64 is a processor-intensive, linear phase EQ. It's designed primarily for mastering, and mixing if used in a limited number of tracks. The TS-64 acts similarly.

Just to be clear, the two sources of latency are on the audio side of the DAW

• your audio interface and it settings and
• plug-ins added to the project.

If you suddenly start to experience latency it is almost always a plug-in.

Anderton
The LP-64 is a processor-intensive, linear phase EQ. It's designed primarily for mastering, and mixing if used in a limited number of tracks. The TS-64 acts similarly.

Yes, the documentation for these plug-in contain notations about latency. Most plug-ins which use a look ahead buffer have some mention of latency, use of look ahead buffers or a clear statement the plug-in is designed for mixing or mastering. All three are code for "do not use while tracking."

Without comment on what should or should not be included in a Documentation,
I wonder if some nice person(Craig?) would mind listing the plugins in Splat that
they consider Look-Ahead, cause latency or are designed for mixing for the less 
knowledgeable(me) that browse this forum?
 
Thanks in advance,
Mel