Weird issue with extra spaces

I have my CapsLock key set to Activate Fn5.

On Fn5, I have my numbers keys.

If I type too fast, I get this weird behavior that inserts multiple spaces. For example, if I want to type d3, i will sometimes get d 3 with 6 spaces. The number of spaces is kinda random, but anywhere from 3 to 6 spaces.

I’ve tried testing with different key configurations, but to debug, I just have the button set to Activate Fn5 and the 3 key on that layer, and it still has this behavior.

Edit: I don’t have this issue with my UHK v2 on macos. Only on my UHK v1 on Windows 11 (see what I did there? It happened again)

What’s your Keystroke delay? I recommend setting it to a small number, e.g. 5 ms or 10 ms.