I'm not talking about using anything as a player. I'm talking about stressing your phone to see if it's stable. And you don't want hardware decoding when doing so. You want to use the software decoding that's in mobo player. This is what glitch uses to break the phone when he tested leakages in the past. so that said, the fact you can't play a single video smoothly means you probably have done work to do on your voltages.
Sent from my SCH-I500 using xda premium