When One ui 2 Core Upgraded all users of m30 Facing Lag issue.
But now happy to inform you all that the Samsung pushed out a new update today with security patch of month March.
This update resolve old lag issue, Display quality improvements, one extra power on off button in status bar menu . With this button you can restart, power off, flight mode without pressing your hard key.
Animations effect more improvements when opening or closing apps. honestly that is the first update that I am satisfied else other like battery drain issue can't be solved cause of android 10 heavy os. the m30 mostly user comments for battery but they forget about that they moved 2 step ahead and they need old Experience ui battery backup. I think this is perfect update to all