[Bug] Ctrl+C not registering. Help needed to root cause.

[mvrius]

Describe the Bug

Hi,

I'm running QMK on my GMMK Pro. I have an issue with Ctrl+C not registering Copy fast enough. This causes me to have to press Ctrl+C multiple times for this to register.

I'm not sure how to debug what is happening, do you have any hints on how I can root cause this? I don't think it's a problem with the hardware, this was working as expected on stock GMMK Pro.

Thanks!

Keyboard Used

No response

Link to product page (if applicable)

No response

Operating System

Windows

qmk doctor Output

No response

Is AutoHotKey / Karabiner installed

• [ ] AutoHotKey (Windows)
• [ ] Karabiner (macOS)

Other keyboard-related software installed

No response

Additional Context

No response

[getreuer]

Through what kinds of QMK keys are you invoking Ctrl+C? Is this with chording plain ol KC_LCTL + KC_C, or is the C key and/or Ctrl key something special like a mod-tap key (LCTL_T(kc))? I am half expecting that mod-taps are involved---they can be tricky to use reliably, making it feel like the keys are not registering.