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Old 01-28-2019, 03:26 PM   #1
TPB3333
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Default Crackles and stuttering at 50-60% CPU

Hey

At 50-60% CPU usage in Reaper I start to get a lot of crackles and stuttering. Is this normal at that percentage or is there something wrong? I use a 2012 Macbook with MacOS Sierra (10.12.6). My Macbook seems to be working fine, just the battery is a little bit old and could use replacement, but I don't know if this would influence the performance of Reaper.

Love to hear your thoughts!

Regards
Toon
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Old 01-28-2019, 03:49 PM   #2
Coachz
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RT CPU in performance meter? If so, that's normal and buffer has to be increased normally.
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Old 01-29-2019, 05:43 AM   #3
TPB3333
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Yes in the performance meter.
But what does 'RT' CPU mean?

Thanks
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Old 01-29-2019, 06:14 AM   #4
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I'm on windows but for me, anything over 50% rt CPU can be glitchy. By disabling master track plugins and freezing other tracks I can manage it well. Having fx on armed tracks really Jack's it up too.

https://forum.cockos.com/showpost.ph...84&postcount=3


The RT ("Real Time") CPU meter measures the amount of CPU time used by the audio thread servicing the sound device. Since it's measuring a single thread, it reflects only the CPU time used by one core, and gives you an indication of how much leeway you have in processing. If you have anticipative FX enabled (and few tracks record armed), RT CPU will generally be pretty low, as most things should be done asynchronously, allowing the realtime thread to quickly put things together.

-Justin
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