Rare wordclock issue with 4i4 g4 (bug report? settings issue?)

Very occasionally (4-5 times this year) I play a note and it triggers a very loud buzzing/clicking sound that doesn’t stop until I disconnect the USB from my audio interface. GP then freezes and subsequently crashes (usually, but not always. Once I was able to reconnect the USB and continue playing).

As stated, it’s a rare occurrence, which has made it very difficult to troubleshoot. So far it’s only happened while I’m playing, and it’s always started when I press a key. It’s been happening since I started using GP earlier this year, so unfortunately I can’t revert to fix it.

The sound is similar to a square wave at 10-20hz. The individual waves are audible as clicks. I believe it’s caused by wordclock drift, but I’m not techy enough to know how to substantiate that claim.

Any suggestions are welcome, I don’t really know where to start with this one.

Operating system: Windows 11 home, version 25H2, build 26200.8246
Processor: 11th Gen Intel(R) Core™ i5-11400H @ 2.70GHz (2.69 GHz)

Interface: Scarlett 4i4, 4th gen

GP version: Essentials v5.1.3
Audio settings: Sample rate: 44100 Hz. Buffer size: 64 bits. Device: Focusrite USB ASIO

Things it isn’t:

USB port going to sleep. Selective suspend is disabled.
USB power disruption. The 4i4 4th gen has a dedicated USB power port, which I do use.
Power plan. I’m using a high performance power plan, edited as per the “optimize your PC for gig performer” PDF.
Buffer size is ok. I know what buffer size issues sound like, it’s not that.
Windows audio. I’m definitely using ASIO.

Things it might be:

Bad USB cable. I have a couple different USB cables that I use, and I can’t say for sure which ones have or haven’t been in use when the problem happens. However, I believe it’s happened with multiple cables.
Driver issue. I updated my focusrite driver this morning, hopefully that helps.

I haven’t implemented all the changes suggested in the optimization PDF, since this is my general purpose laptop as well. I’m saving up for a dedicated laptop.

Have you tried double-clicking the Panic button on the top right of the main window? Double-clicking resets audio.

I didn’t know that! I’ll try that next time.

I have a panic widget mapped to a button on my synth, would double tapping that button/widget have the same effect?

Yes !

Personally, I would wonder if 64 buffer is too aggressive. Maybe consider trying 128 and 256 and see if it bothers you (after maybe trying to get used to it).

My $.02, feel free to ignore.

Jeff

Happened again, double clicking the panic button did nothing.

Switching from 44100 hz to 48000 made the noise stop without crashing GP at least.

GP is measuring the CPU load at 20 - 40% depending on the rackspace, and the laptop fan is barely going. I’m not super techy, but I don’t think buffe size is the issue?

How do you know it’s a wordclock issue?

I don’t know for sure honestly, it was just my best guess based on the research I’ve done so far.

Agreed - though 64 buffer size is rarely needed - 128 is usually fine with no noticeable difference.
You may have to contact Scarlett – maybe it’s a driver issue or maybe Windows is running something intermittently that is interfering. Hard to know. But GP has no control over the interface, it doesn’t even know about it - GP is using the OS interface to your interface

Alright, I’ll see what they can do about it. Thanks for the help!