R-Go Split Keyboard problems

I decided to buy the R-GO Split Keyboard, because I really like the idea of split keyboards. The Keyboard works find with my Macbook and on my Windows PC.
But the keyboard behaves very weird on manjaro. When I type with only one side of the keyboard it works perfectly fine.
But as soon as I type with both sides, its lagging until i stop writing, then the typed text appears :thinking:
I am pretty new to manjaro, so I am not able to fix the problem by myself, do you have any ideas ? :slight_smile:
Thanks :slight_smile:

Keyboard: R-GO Split Qwerty US black wired