Hi,

I have noticed this myself just a few days ago (Pd 0.52-1-really, Windows 7). I had a quick look and couldn't immediately spot the problem, but I will have a closer look. Actually, I have been working on a branch with several scheduler improvements and this issue is definitely on my to-do list.

Christof

On 11.01.2022 20:43, William Chang wrote:
Hi all,

If I turn on 'use callbacks' in audio preferences, then turn on DSP, pd's CPU usage goes to > 100% and stays there even if I turn DSP back off. This sometimes locks up the GUI and I have to restart Pd. Without checking 'use callbacks' it seems to be fine. Tried this with default audio devices, MOTU Ultralite mk4, and Blackhole 2ch. Can anyone reproduce?

Pd: 0.52-1-really
macOS: 12.0.1
MacBook Pro 14" M1 Pro

Thanks,
Will

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