Razer huntsman mini not registering

I have a Razer Huntsman Mini  keyboard, and sometimes, once every 15-20 key presses, regardless of the key - it doesn't register. When I notice that the key isn't registering and at that moment I'm not releasing it, but instead press another key like the spacebar, then the previously unregistered key starts working. Why could this be happening. I've already restored the software to default settings, but it doesn't help.