Modartt user forum - CPU issues with Pianoteq in DAW

Re: CPU issues with Pianoteq in DAW

null@example.com (EvilDragon) — Mon, 30 Dec 2013 08:18:29 +0000

I guess it's Ableton at fault then...

Re: CPU issues with Pianoteq in DAW

null@example.com (lindmusik) — Sun, 29 Dec 2013 23:02:37 +0000

Unfortunately 25% from playing just a single note. I see other Ableton users have had similar problems; could be an issue with the latest update. I'm simply a bit confused, since I used to use 4-5 Pianoteq instruments at the same time (playing simple things, but still!) without any trouble.

Re: CPU issues with Pianoteq in DAW

null@example.com (EvilDragon) — Sun, 29 Dec 2013 18:42:22 +0000

Yes, CPU usage does depend on which model you're using - the latest models (Bluthner, U4) take more CPU. I would say 25% of CPU is quite ok when having dense polyphony going on.

That, and also Ableton's CPU meter doesn't really measure CPU usage but audio buffer processing time.

Re: CPU issues with Pianoteq in DAW

null@example.com (lindmusik) — Sun, 29 Dec 2013 17:42:59 +0000

Ah yes, managed to increase the preset buffer size in Ableton, and the problem is a bit better. But not fixed; simply using one Pianoteq instrument gets my CPU usage to 25 %; isn't that a bit much? Is Pianoteq 4.5 more demanding on the CPU than, for example, 4.1? Or perhaps, my Macbook Pro (2009 model) is simply dying...

Re: CPU issues with Pianoteq in DAW

null@example.com (EvilDragon) — Sun, 29 Dec 2013 17:16:43 +0000

Yes, lower buffer sizes make your CPU work harder. If you don't need realtime recording of audio or MIDI input (that's the main reason to use a low buffer size), then increase the buffer size in Ableton.

CPU issues with Pianoteq in DAW

null@example.com (lindmusik) — Sun, 29 Dec 2013 15:10:08 +0000

I'm having some CPU trouble in my DAW (Ableton) using Pianoteq. In the beginning, I could have 4-5 different Pianoteq instruments playing at the same time. Now, using two instruments make my CPU go up to about 50 %. It could have something to do with the buffer size; when I'm using Pianoteq standalone, buffer size is 1024 samples, but in Ableton, it's 128. Does anyone know how to fix this?