Apple Arcade game goes black like i exited the game during play

This is happening ALOT lately. Especially when I play Mind Symphony. I know it has happened a couple other times with other games but not enough to remember. However when I play Mind Symphony, it seems like Im doing good, about to beat the high score and then it totally just goes black for a second like I exited the game. Just in the past 15 min this happened 2x. Why is this happening???