I’m getting Highg CPU usage on Playbeat 4 in standalone and as AUv3.
when loaded in AUM Playbeat4 CPU reads between 40% up to 80% on my ipad 9th,
on ipad Pro M2 i’m getting between 35%-60% on CPU !
when playbeat doesn’t even play anything!
this is way to much just for one plugin doing nothing .
IOS 17.6
1 Like
I can confirm the same on my iPad Pro M1 model. Playbeat 4 is using 30-50% DSP when playing a factory preset in AUM vs. Playbeat 3 which is using 2-6% for a typical a factory preset.
Edit: This is iPadOS 18.3.1
1 Like
thanks Ed, it’s good to know i’m not alone, i hope it can be fix soon.
i’m wonder ,How does the IOS 18.3 handles music production Apps for you ?
No issues with any of the music production apps that I use (although many had minor fixes right after). The last one that I had serious trouble with was with iOS17, and only one app.
1 Like
Sorry to hear that. This shouldn’t be happening, we’ve tested it on various iPad models and usage shouldn’t exceed ~20% in any case. Could you share the sample rate and especially the buffer size used in your AUM project?
Hi Audiomodern,sure.
buffer size 256 frames, 48000 Hz.
Here are the settings from my AUM session
Edit: FYI - Changing the buffer size from 128 to 256 drops the CPU usage from the 40’s into the 30’s on this project.
And the settings exported:
AUM Version: 1.4.7 (352)
Device: iPad
Model: iPad13,4
System: iPadOS 18.3.1
Audio Session:
Sample Rate 48000 Hz
Buffer Size 128 frames
Buffer Duration 2.67 ms
Inputs 1
Outputs 2
Input Latency:
Device Input Latency 1.00 ms
Round Trip Latency 8.00 ms
Output Latency:
Device Output Latency 1.67 ms
Latency Compensation 0.00 ms
Total 1.67 ms
IAA Host Ports:
1: Not Connected -
2: Not Connected -
3: Not Connected -
4: Not Connected -
5: Not Connected -
6: Not Connected -
7: Not Connected -
8: Not Connected -
Advanced Info:
Max Channel Count 1 IN, 2 OUT
Input Audio Format 1 Ch, 32 Bits, 48000 Hz
Output Audio Format 2 Ch, 32 Bits, 48000 Hz
Session Category AVAudioSessionCategoryPlayAndRecord
Session Options E9
Session Mode AVAudioSessionModeDefault
Session RouteSharing 0
Supports Multichannel Content NO
Available Categories -
-
AVAudioSessionCategoryAmbient -
AVAudioSessionCategorySoloAmbient -
AVAudioSessionCategoryPlayback -
AVAudioSessionCategoryRecord -
AVAudioSessionCategoryPlayAndRecord -
AVAudioSessionCategoryMultiRoute
• INPUTS 1
[1] AppleUSBAudioEngine:KTMicr -
Name KT USB Audio
Type MicrophoneWired
Spatial Audio NO
Channels 1
1: KT USB Audio FFFFFFFF
Sources 0
Selected Source -
Preferred Source -
• OUTPUTS 1
[1] AppleUSBAudioEngine:KTMicr -
Name KT USB Audio
Type Headphones
Spatial Audio NO
Channels 2
1: KT USB Audio Left FFFFFFFF
2: KT USB Audio Right FFFFFFFF
Sources 0
Selected Source -
Preferred Source -
• AVAILABLE INPUTS 2
[1] Built-In Microphone -
Name iPad Microphone
Type MicrophoneBuiltIn
Spatial Audio NO
Channels 0
Sources 3
Top (Upper) 1835216945
Back (Upper) 1835216946
Front (Upper) 1835216947
Selected Source Front
Preferred Source -
[2] AppleUSBAudioEngine:KTMicr -
Name KT USB Audio
Type MicrophoneWired
Spatial Audio NO
Channels 0
Sources 0
Selected Source -
Preferred Source -
1 Like
Unfortunately Latest update didn’t help with Huge DSP and CPU spikes.
Still getting over 35% usage on one instance
of Playbeat 4 open in AUM.
We’re currently investigating this, thanks for your patience.
2 Likes
I think it might have something to do with multicore rendering.
Audio threads not efficiently spreading on Power Cores and Efficiency Cores.
Don’t use Logic , so i can’t test it, but on Cubasis 3 i was able to run 4 instances of Playbeat4
with DSP rarely jumping over 25% on Ipad 9th.
As far as i know CB3 muli core suport is quite good at the moment ,so maybe it’s an indication…
Update - Just installed version 4.0.4 today and CPU usage in the same scenarios looks much better. There are still some CPU spikes where AUM reports max CPU during random regeneration, remix or AI generation , but only for a second. CPU typically floats between 20-35%, with 30% being about typical. That’s very usable for me. Hope others are seeing improvements too.
1 Like
It seems that I get audio drops, clicking sounds, whenever I use the global or temp random feature on my Ipad air M2 hosted or standalone. It corresponds to cpu spikes, do you experience the same behaviour ?
@KaOpshere - I have not noticed dropouts or clicks when using the global or temp randomize, however after performing some testing, I do notice that the CPU usage spikes to around 97% in AUM for 2-3 seconds when those are triggered. The CPU usage with just one instance of PB4 in an instrument slot with the transport stopped and nothing playing hovers around 14-15%.
My current settings in AUM are slightly different than in one of the previous posts:
Sample Rate 48000 Hz
Buffer Size 128 frames
1 Like
Mmmhhh curious, I got them hosted or standalone and even on pc…
I thought an iPad Air M2 should handle it.
1 Like