keybord bug when playing the game!

I have a gaming keybord (Razer keybord) and I am using the keybord for 3 years. last 2 months I have a problem about movement in game. Sometimes, keybord doesnt work properly or delay in the tape, So I can't move properly in CF. I checked the keybord and there is no problem about it, There is a bug or a problem about the game, we can't move properly in game due to keybord bug. please fix that game bug. Thanks. 

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