Troubleshooting Latency issue (Latency increases overtime)

I’ve seen a lot of information over latency increasing setups and people running tests and it has been incredibly helpful.

I troubleshot my Presonus(daw) latency problems by downloading the ASIO drivers for Presonus and reorganized my blocks to keep things in 10-20ms range. It’s great.

Except within 15-20 minutes it’s gone from 10-20ms to 150-200ms latency.

The current fixes I’ve found are;

  1. Download a special power management program that shows all your power management. This one doesn’t work because the setting that causes the issue isn’t available in windows 11. Maybe it is mistitled, but I cannot find it to disable it. Something about the processor checking every 15ms for performance.

  2. Go into the NeutalDSP usb audio device control panel and change the sampling. This does work, but it also causes every program (guitar pro for example) to stutter, then fail. I basically have to restart my PC to recover from it. My latency does go back to 10-20ms though! So, there’s that.

Has anyone had success in this situation?

I can use OBS or Presonus (with monitoring on), but within 15 minutes latency goes way over 100ms. VoiceMeeter Banana, even when assigning the QC ASIO driver to A1 still has terrible latency. trying to just stick with Presonus / OBS because at least they work for 10-15 imuntes.

Whenever I record with the QC, I monitor directly from the QC outputs via cable into soundcard/mixer and direct to speakers.
If you want to use plugins later, you can record the QC processed and unprocessed outputs so you have the QC sound, plus the raw DI’d guitar sound.

Going in and out of the DAW to monitor what you’re playing is just unneccessary processing and delay that only serves to add latency.
In your setup at the moment, I believe you will have up to ~8ms latency from the QC alone, then probably the same again at least from your computer and DAW.

Your solution adds latency too, because of A/D and D/A conversions as long as you are not using a fully analog mixer (which is probably not the case because you also mentioned a soundcard). If the DAW is set up properly and does nothing apart from routing the input signal to and output there is not THAT much of additional latency. I’m mostly using logic and it additionally has a low latency monitoring mode which is pretty good. Going the USB way into your computer / DAW eliminates the need for one A/D conversion on the QCs side (I don’t know if USB itself adds latency by some conversion or buffering?) so overall the Latency is very low using QC into Computer / DAW via USB and Out through my interface to my speakers.

The only way to monitor the QCs outputs without adding additional latency is by connecting your speakers directly to the QCs output or by using headphones. (But you still have the latency of the outgoing D/A conversion)

Correct me if I’m wrong on this one, I’m happy to learn new stuff :raised_hands:

Are we saying it is normal for latency to climb up, to several hundred ms, minutes after turning monitoring on?

I’m fine with the built in latency from the monitoring. What I’m not fine with is that within 10-15 minutes it has gone from 15-20ms up to 100+ms. It’s not instantaneously gained latency.

Also my scarlet 2i2 doesn’t behave like this. Monitoring latency is under 10ms and it stays there. Only with the QC does it ramp up to hundreds of MS after 10-15 minutes.

Not normal, no. It definitely sounds like an issue with your computer/DAW/drivers though.

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