Dorico 5 becomes slow and frozen

I am using Dorico Pro 5 on my Macbook air m1 16 GB. I have a project with 10 instruments and just 100ish bars. but Dorico becomes very slow and can’t function copy and paste without freezing. Can someone please help me out? I’ve attached the diagnostic report here.
Dorico Diagnostics.zip (1.4 MB)

Is condensing enabled?
Welcome to the forum, by the way!

No, it is not. I noticed that maybe it was the piano part that caused this problem. Dorico froze when I tried to paste something on that part, and I can’t even input notes without crashing…

You might need to send your file to a dev (or even Daniel Spreadbury himself) to debug it…

Welcome to the forum, @Subscribe8606. I’m sorry to hear you’re having problems. The diagnostics don’t include any crash logs, which is what I would expect because it sounds from what you write that Dorico is hanging/freezing, rather than crashing.

Could you please post your project here, together with details of how to reproduce the issue, so that we can take a look and see if we can find out what’s wrong?

Hi Daniel, Thanks for reaching out! This is the file I am having trouble with. Overall it slows down quite a bit and I am not sure what causes this to happen. and it is now impossible to copy and paste something to the piano part without freezing. it was mitigated when I changed the piano part to another instrument…

PianoPartcantcopypaste.dorico (3.1 MB)

Thanks for attaching your project. Can you try and experiment for me? Please do File > Save As and save your project under a new name so you don’t accidentally make any changes to the project as part of your experimentation. Then delete all of the slash regions in the project, and now try some note input, editing and copy/pasting in the piano instrument. Is it now any more performant?

Thanks for your replay! This is what exactly I did: I saved the project under a new name and delete all the slash regions. Then I tried to input some note during the CODA section in the piano part. It still froze after a few notes and the same went with copy and paste.

That’s very strange. Can you please try this again, then when the software becomes unresponsive, run Activity Monitor and choose Spindump from the little menu on the toolbar. Zip up the resulting text file and attach that here.

Spindump.zip (371.9 KB)

Here’s the file.

Many thanks for the spindump. It looks like Dorico is spending a lot of time performing calculations for the new polyphonic voice balancing features. Please go to the Dynamics page of Library > Playback Options and deactivate Use automatic polyphonic instrument voice balancing. Does this speed things up for you?

Wow. it works! Thank you! So is it because I put rhythmic slash voice with ordinary voices?

No, I don’t think so. I need to check with the developer who worked on the polyphonic voice balancing feature, but for the time being you should find that working with it disabled is fine, and you won’t notice any meaningful difference in playback with this particular piece.

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