I have galaxy A50s and it lags like hell....previously i was using A50 and in that device pubg used to work very smoothly but in A50s sometimes it gluctuates sometimes it lags...sometime it runs smooth...i tried evry thing but i am not getting the pr...

My system ui sometimes becomes smoother and sometimes becomes very  fluctuating and laggy..Can anyone tell me a way to make it always a smoother one??..