Suspiciously high CPU usage in one specific project

Bug Description

In one specific project (Test01, attached), the CPU usage meter was showing up red, even when not much was going on. To try and find a minimal example, I narrowed things down to a single hi hat sample which causes the CPU meter to go yellow when played on its own, which I would not expect to take up that much CPU budget. I’m assuming that the other instruments in the project contribute in a similar way.

In a different project (CPU Benchmark, attached), I recreated this exact instrument with the same parameters, and the CPU meter does not appear.

Reproduction Steps

  1. Open Test01.
  2. Go to song view, and play pattern 5, which is one single instrument.
  3. CPU meter turns yellow.

Occurrence

Bug is always reproducible in the attached Test01 project, but I’ve not had it happen in any others.

Found in

  • Version: 1.0.1
  • Build: 995

Attachments

Video demonstrating the issue: https://youtu.be/_RfzZPhelO0
Projects used: Dropbox

Hi @NoodleCollie , thanks for reporting this and sorry you’re having troubles. The difference between these two projects is with Synth instruments as far as I see. VAP synth is the most CPU intensive and you have it using 6 voices. We support up to 8 voices between the synths but not all combinations will perform equally. We suggest that you don’t activate synth voices unless you use them in your project, as they will consume CPU power when activated even though they might not be playing at that moment. With samples it’s different… anyway, I’ll mark this as “by design”. Please let me know if you have any other questions. Finally, sorry for slow response: you caught us in the middle of summer vacation period. Thanks for your patience!

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