Keyboard registers on key release and not on press - Huntsman V2

I wonder if I am the only one having this problem, because it goes as default, I didn't make any changes. And its crucial.



Whenever I press the specific action button in game (For example - Holding W + Shift to sprint and pressing R to reload) - it will never start reloading action on pressing "R", only when I release it. Also I can add that this delay between pressing and releasing should be very short, either way it won't do reloading at all.



But some buttons/actions have no issues with that. For example - pressing "Shift" immediately activates sprinting, or "Space Bar" immediately makes character jump.



What is cosing this and how to fix that?

Please help.