Mouse acceleration is a feature that can be used to improve gaming performance, but it is not always necessary. It works by altering the speed of your mouse cursor in relation to how quickly you move the mouse.
If you move the mouse quickly, the cursor will move farther than it would if you moved the mouse slowly. This can help to improve your accuracy when aiming in games, but it can also cause confusion if you are not used to it.
Mouse acceleration can be a great tool for gamers, especially those who need to quickly turn and aim in-game.
However, it can also be a hindrance, as it can throw off your muscle memory and make it difficult to control your mouse cursor. Ultimately, it is up to the individual player to decide if mouse acceleration is right for them.