Clear cache and uninstall unnecessary apps
Smart TVs store a lot of temporary data during use, especially when you frequently open applications such as YouTube, Netflix or web browsers. These data accumulate over time and fill up the memory, making the device process slower. To fix this, you should go to the settings, find the "Memory" or "Applications" section, then clear the cache and remove unused applications. This helps free up space and increase the response speed of the TV.

With just a few simple steps, your old Smart TV will be as smooth as new again. (Source: Samsung)
Update system software
Many people skip updating their Smart TV’s software, but it’s an important step to improve performance. Manufacturer updates often include bug fixes, system optimizations, and security enhancements. You should periodically check “Settings” > “System” > “Software Update” to ensure your device is running the latest version.
Turn off unnecessary features
Some features like auto-sync, advanced visual effects, or background app updates can consume system resources. If you don't really need them, you should turn them off to reduce the load on the processor. This is especially useful for older TVs with low configurations.
Restore factory settings
If you’ve tried the above and your TV is still slow, you might want to consider a factory reset. This will return your device to its original state, wiping out all of your data and personal settings. Before doing this, back up any important information to avoid losing data.
Clean the radiator slot
Dust build-up over time can cause your TV to overheat and perform poorly. Regular cleaning will help your device “breathe” better and prolong its life.
With just a few minutes of regular maintenance, you'll find your old Smart TV responding much faster, providing a smooth entertainment experience like new.
Source: https://vtcnews.vn/hanh-dong-don-gian-co-the-giup-smart-tv-cu-tang-toc-ar966656.html
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