This is sort of an information post but I'm also curious if anyone else has noticed this. I haven't done anything major in Sonar for a while but recently started recording a friend's song. We got the acoustic track down and added several other audio & soft synth parts to the project.

On my own time I started working on getting the tempo map to match the recorded tracks. Using Audiosnap (I'm using 8.5.3 Pro) I edited the tempo map for the acoustic track then used Audiosnap's set project from clip. Aside from a few minor hiccups along the way I got the tempo track matched and everything seemed good.

However, after closing the project and coming back to it later, the track view was rather sluggish when scrolling around the different tracks. At first I thought it was Audiosnap as I've heard (and experienced) the many quirks and bugs in AS. Though after most of a days worth of testing & forum searching I narrowed it down to the fact that using AS to set the project tempo added lots of tempo changes (which in it's own right, is exactly what I wanted!)

I started deleting a good portion of the tempo changes and the sluggishness started improving. My guess is that because the time ruler at the top stays rigid (i.e. doesn't shrink or stretch when you adjust the tempo) and the audio clips themselves adjust to each tempo change, when you have that many changes in a project any audio clips have a lot of graphic calculations to appear correct.

I ended up going back to an earlier project version and redoing the tempo map editing to not include so many anchor points so as to reduce the amount of tempo changes in the end. It was better... though I still needed enough changes to keep the timing tight that it's still a little slow scrolling around the tracks. Another way to improve the slowness is to freeze as many of the audio tracks as you can... that made it easier.

Has anyone else experienced this issue? I don't normally post, but this seemed like something that might catch people off guard (thinking it was Audiosnap!) and wanted to share what I found.

-Ryan

I know this is a kinda old post, but I wanted to comment on this anyway.
I recently experienced a very jerky performance in track view.
When I clean out the Picture Cache folder it will run smooth, but only for that one session.
After that, when the picture cache files are written it's back to jerky.

But now I read your post, and the tracks I've worked on lately do have a lot of tempo changes.

I'm gonna try to remove the tempo changes in a test project to see if the jerkyness stops :-)

Cheers,
Kris

If the GUI does not update smoothly during playback, press the Pause key to make sure you didn't inadvertently put SONAR in CPU conservation mode. If the Pause key (on the keyboard) has been pressed, SONAR will display the letter P in the status bar.

I've been having the same issue as the original poster.  Slow GUI on a project with some tempo changes (but not a lot).  I'm not using AudioSnap at all.  It's not the Pause mode (that behaves quite a bit differently).  Clearing out the cache does work but, as mentioned, just for that session.

Thought I'd throw this out there since I'm always gratified to hear someone else having the same bizarre issue I am.

I'm using Sonar Producer 8.5.2, 32bit, Win7 64bit.  Curious to know whether this happens in Sonar X or whatever the latest version is.

Has anyone experienced this in Sonar X or X1?  It's definitely an annoyance in 8.5.  Kind of defeats the purpose of doing much in the way of tempo mapping.

I'm getting this problem in Platinum. I have re-recorded an old demo. What I did was to extract the tempo changes from the original track and this created the overall tempo map for the project.
 
Granted, my song has about 64 tracks and plenty of plugins but my PC is pretty powerful. The GUI is ridiculously sluggish (nothing to do with the pause key). If I disable all FX then we're back to smooth scrolling. If I go back to the project version with rigid tempo and all FX enabled, the gui is smooth.
 
What can I do?

how big buffers did you set?

You have dug up an old thread but I think that the problem still exists.  Splat had an issue with wave form drawing in areas where the tempo was changing. They seem to have fixed that bug but things do slow down when there are continuous tempo changes.
 
You can log a bug or submit a feature request.  Those are the only options I know of.

"how big buffers did you set?"
 
My RME Fireface latency is at the highest possible setting. Playback and record buffers have no effect.
 
"You can log a bug or submit a feature request.  Those are the only options I know of."
 
Thanks, will submit a bug
reginaldStjohn
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Re:Slow GUI in projects with lots of tempo changes 2 days ago (permalink)

You have dug up an old thread but I think that the problem still exists.  Splat had an issue with wave form drawing in areas where the tempo was changing. They seem to have fixed that bug but things do slow down when there are continuous tempo changes.
 
You can log a bug or submit a feature request.  Those are the only options I know of.

 
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reginaldStjohn

my problem is also strange
i record................... it sound like it is in perfect time
then i have to go back and move my track forward to make it lign up
is there anyone out there?