Lags and Freezes

Great game in all but theres is a small problem. When Im playing it the game lags sometimes in the middle of it, this isnt a big problem since it only lasts about 3 seconds but it can get annoyingly. Secondly if Im playing the game at a low battery and that pop up comes saying 20% remaining, when I close it the game it self freezes and the only way to fix it is to zoom out and delete the tab, plz fix ;-;

Gingerthepainter about Terraria, v1.2.11971