My LG optimus fuel #LGL34C will not play games longer than a few mins without kicking me out.

[Mindreaver]

I have a LG optimus fuel #LGL34C and always use WIFI to get online. The issue I'm having is whenever I try to play games. Everytime I open a game app I'm only able to play a few minutes of it before it automatically closes and I'm sent back to the home screen. I've checked my memory storage, and plenty there. I've also rebooted my phone and that did nothing, I've cleared its cache and even stopped all other running apps but I'm still constantly being kicked out of games a few minutes in without no apparent reason. How can I get into a game if I'm kicked out back to my home screen every couple mins. Someone please provide cause of this and solution to fix it?