I have the Samsung Galaxy M31s (6GB, 128GB) Mirage Blue model. The phone is around 7 days old. After a few hours of uptime on it, I observe really bad animation lags across system, and these lags are so bad that you can't use the phone when they happ...
I faced the same issue and I've managed to fix it.Connect your phone with USB-C cable which is connected to your PCShut down your phoneHold the volume up and power keys until Samsung logo shows up, followed by which you will release the keysWait for ...