If you use too much of your computer's RAM, the game may begin to lag, resulting in an unpleasant gaming experience. If you notice the game lagging more than usual, you should check how much RAM you use. If you're using more than half of your RAM, it's time to consider upgrading to a computer with more RAM. Minecraft is a resource-intensive game, so having a computer capable of handling the game's demands is essential. Otherwise, you may be forced to play a sluggish game.