Huntsman mini lagging while playing games

When I play games, my keyboard randomly skips key presses (rarely), or just types the letter 1-2 seconds later and keeps typing it until pressed again, for example: Tetssssssssssssssssssssssss (I typed out Test on my keyboard and pressed every key only once, also works on delete and enter). This happens to me when playing any game and rarely outside of playing games.

Could this be because my computer is too slow to handle playing a game and handling a keyboard at the same time? I tested it with an other keyboard and it worked fine.

Does anybody know why that is happening?

Thanks.