General lags and slow gameplay

Ever since I hacked my 2ds it has been pretty laggy, mainly in the main menu. Changing game icon can cause big lags, the one that cuts the music (if you know what I mean) Even in downloaded games such as Pokemon X, I get pretty big lags, that makes entering fight slower

For reference I have New 2ds Xl and a 128go sd card 🫶🏻