We all know the beta2 update screwed up the screen refresh in S20 series after beta2 update due to which the phone seriously lags and slows down.
When this happens, go to settings - display and change the motion smoothness from standard to high (or) high to standard. Basically we just have to toggle the motion smoothness. I know it's annoying to do this manually every single time you unlock the phone.
We can automate this partially using Bixby routines. Go to settings, advanced features, Bixby routines and create a manual routine to toggle the Motion smoothness as shown in the screenshot. Add a shortcut to this routine on the home page. Now whenever you unlock the phone and you see the screen lag, just click on this routine shortcut on home page twice. Then everything becomes normal.
