Rapid key presses are missed in Hyprland

[nazya]

Description

Rapid key presses simulated by keyd are not processed correctly in Hyprland. The events are missed in wev, but the same setup works fine in TTY and Sway.

I’m also noticing missing touchpad clicks. It seems related to higher CPU load, but I’m not sure and can not confirm that it is related to Hyprland.

Steps to Reproduce

Simulate rapid key presses using keyd, e.g. capslock=macro(test1234567890 space test1234567890)
In wev I can also see that some press/release events are missing.

Environment

Hyprland -v

Hyprland 0.49.0 built from branch main at commit 9517d0eaa4ef93de67dc80fecca7a826f7ad556d  (renderer: Added a pointer position uniform to the screen shader. (10821)).
Date: Tue Jul 8 21:31:15 2025
Tag: v0.49.0-158-g9517d0ea, commits: 6256
built against:
 aquamarine 0.9.0
 hyprlang 0.6.3
 hyprutils 0.8.1
 hyprcursor 0.1.12
 hyprgraphics 0.1.4


flags set:
no xwayland

But I saw this in previous versions too.

sway -v

sway version 1.11

Additional Information

I am experienced with HID and TinyUSB and I observed the same issue when was sending reports before HID was ready.