Because the system takes up too much memory and affects the system operation, it is getting slower and slower. Android usually has this problem. If it is other smart TV, or the set-top box can install a Betancon market, which has the function of clearing TV memory and can slim down the TV, and the TV will not be so stuck if it is cleaned regularly. But the Samsung TV system is closed, so the software can't be installed. It is recommended to restore the factory settings irregularly, which can alleviate it for a period of time.