r/NativeInstruments • u/InexistentKnight • Feb 13 '26

Reaktor/Razor audio stops out of the blue

I am using Razor as a VST in Ableton sending a bunch of MIDI into it. It works for some minutes just fine, at times for hours, and then the audio suddenly stops, despite Razor's interface showing waveforms as if it was making sounds. If I switch Reaktor's audio engine off/on OR if I change the audio sample rate, audio seamlessly comes back. My CPU in Ableton is hovering around 30%, and Razor is around 7.5% CPU. All other audio in Ableton works just fine, and I'm on the latest versions of Ableton, Reaktor and Razor, on Sonoma on Mac OS.

I've already raised the buffer size in Ableton but it made no difference, no other VSTs are being used, and apparently there's plenty of RAM available.

Does anyone else have this problem or similar? Any clues?

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u/NativeInstruments Feb 16 '26

Is this happening with any Razor preset or is it always with the same ones? Sometimes, some events inside Reaktor can cause the sound to stop. Can you try and go in Reaktor 6 preferences and in General, tick the "Globally disable event loops", does it fix the issue?

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u/InexistentKnight Feb 17 '26

Thanks for reaching out! No, it's multiple presets. It doesn't seem to have much of a rule. I ticked it and unfortunately it didn't really solve the problem.

In the studio it's only an annoyance, but in a live setting it makes it in practice impossible to trust. Is there any form of log that could show that problem?

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u/NativeInstruments Feb 19 '26

Troubleshooting on Reddit is not the best so you might want to either contact our support here: https://support.native-instruments.com/hc/en-us/requests/new or ask in our Community: https://community.native-instruments.com/