Keyboard spits out 2 letters when pressing X

Mar 9, 2018
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so i play a game where i have to press letters cxz real fast to do a combo. when i press cxz real fast it types the letters "cxxz" my x always doubles when i press it really quick, but its wierd, if i type x right now, it does not double? its only when i hold it down for a short time and press another letter. cxxz zxxc. I need this for a very important combo, someone please help.