I am making a game in JavaScript. Whenever I put a .each() in to iterate through a list of bullets or enemies, it makes a small yet noticeable flicker on the screen. would there be any way to fix this?

function playing() {
    $.each(bullets, function (index, bullet) { //Makes tiny flicker.
        bullet.update();
    })
}

function update() {
    if (!gameOver) {
        %("menu").hide();
        playing();
    } else {
        $("#menu").show();
    }

    setTimeout(update(), 6);
}

spawnE(); //spawns enemy
update();

NOTE: I am using setTimeout() instead of requestAnimationFrame() because it keeps the speed of the game consistent across different refresh rates.