When I connect headset for recharging, bluetooth keyboard is laggy

Whenever I connect my headset via USB to charge, my bluetooth keyboard become very laggy, like 2 seconds before any key press arrive.

How can I debug this problem?
I run lsusb before and after the headset connected, but it always show the same devices.

Operating System: Manjaro Linux
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2
Kernel Version: 5.10.7-3-MANJARO
OS Type: 64-bit
Processors: 8 × Intel® Core™ i7-8565U CPU @ 1.80GHz
Memory: 15,4 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620