Keystroke not fully utilized

I got the keyboard a while ago. But I discovered that the keystrokes were not fully utilized and I was already at full capacity after half a keystroke. At first I thought it was a Windows or controller setup problem. But now that I've been able to test the keyboard on another system and the same problem occurs there, it's probably the keyboard. Did someone had the same issue or a probely a fix, i would really thankfull.