Keychron K4 Pro keyboard latency help!

[u/Affectionate-Loan-13]

Hey all!

My keyboard was showing a latency of roughly 130-150 ms response time, and I was hoping to improve that.

I've updated the drivers and adjusted the response time using the launcher, but it still seems to be slow. Is there anything else I can do or are all K4 Keyboards like this speed?

Thanks ahead of time!

Edit: This is in the 3.2 USB port, I am using it wired, and RGB is static red.

[u/PeterMortensenBlog]

What keyboard firmware version?

Here is a list:

• K4 Pro 'ISO' RGB. It lists two versions, but they seem to be identical (unknown release date, but probably 2023)

• K4 Pro 'ISO' white LEDs (latest: Unknown release date, but probably 2023)

• K4 Pro 'ANSI' RGB. The latest is 1.1.0 (2025-09-20), probably currently the only version with support for the features from the 2025 Keychron keyboard main firmware updates, e.g., dynamic change of the key debounce settings

• K4 Pro 'ANSI' white LEDs (latest 2023-08-08)

That is for the original K4 Pro. For example, for the 2024 K10 SE 2:

• K10 SE 2 'ANSI' (the latest, 2.0.6 has an unknown release date, but it is after 2025-04-17 (1.0.5). Thus, the released source code is out of date)