Screen flickering/crashing when pressing save and quit (mcpe)

hey i got a problem wit my mcpe i had this but then a little different in other versions and it rlly anoys me i have a vid of it but i chant attach it its in the 60 mb i hope u guys can fix it. it may be affected by my cpu but idk and my phone isnt a android google pixel its a samsung galaxy j3 2017