Exported game lacks a little when space bar is clicked

Hi all, I’ve exported my game as local game (html 5) and the exported game lacks when i play the game. My game requires the player to click space bar to jump and the game lacks when the space bar is clicked. How can i solve this issue?

By “the game lacks”, did you mean “the game lags” (slows down)?
Usually, if a game slows down, there are too many objects being created, or more generally, too many actions taking place at the same time. Often, it’s because a trigger once should be added somewhere.