Brand new Galaxy s8 feels laggy


I got a galaxy s8 recently. The phone is lightening fast but has a strange stutter every now and then. Sometimes a little lag can be noticed when I push down the notification bar, or scroll. Its fast but just not super stable or smooth like my iPhone used to be. Feels like a cheap phone. I've used Pixel 2 XL had no issues, no lag, nothing. Worked wonderfully. Whats wrong with Samsung devices?