Kerry Wan/ZDNETIn the age of smart TVs, convenience is king. With just a few clicks, we can dive into endless entertainment — but that ease comes with a downside: the buildup of cache data.Also: 5 easy ways to instantly improve your soundbar’s audio (without spending a dime)Just like on your phone or computer, a cluttered TV cache can lead to sluggish performance, app crashes, and even hinder new content from loading properly. That’s why it’s important to clear all that extra cache and make your TV feel like new again. Before I break down the steps for how to do it, let’s address the big elephant in the room first.What is a cache?A cache is a temporary storage area where data is kept for quick access. On your smart TV, the cache stores information from apps, websites, and system processes to help them load faster every time you turn it on. Think of it as a bunch of temporary files intended to speed up loading times for frequently accessed information. Also: The best TVs of 2025: Expert tested and reviewedFor instance, when you open a streaming app, the cache might store thumbnails, login details, or recently watched shows. Caches are designed to help your TV load this content more quickly. Over time, however, the cache can become overloaded with outdated or unnecessary data, which can consequently slow down your TV’s performance. More