PUBG Mobile lag issue in A50

[CāsăNøvâ]

I am having Lag issue while Playing PUBG. Also sometimes my screen gets Freez but Other System Responds. But when I checked my Device Maintenance it show only 600 to 700 mb Free. What should I do? 

[appooppan]

when I start pubg or any game bixby is turning on in between which causes lagging How to stop Bixby turning on?

[Samsung_wLYqhXZ]

Yes ... how to to resolve problem ? I don't  know