Hi policios.jovi,
Good day,
Could you kindly tell me which firmware are you currently on? (setttings>system > about phone > software information > build number)
Please try to use the mobile manager to helps free more memory, improve system performance, and save power.
Please refer below tips, please notice, the interface would be different because of different model and system version.
https://www.asus.com/zentalk/thread-9493-1-1.htmlhttps://www.asus.com/zentalk/thread-33286-1-1.html
Thank you.