Don't Install If You're Nervous About Bugs
If you're having an excellent experience on macOS Big Sur 11.2.2, macOS Big Sur 11.2.1, macOS Big Sur 11.2, macOS Big Sur 11.1, macOS Big Sur 11.0.1, macOS Catalina, or an older version of macOS, and macOS Big Sur 11.2.3's changes don't blow you away and/or you're nervous about it potentially hurting your Mac's performance, you might want to wait.
The macOS Big Sur 11.2.3 update is an important one, but the software is causing problems for some Mac users.
The current list of macOS Big Sur problems includes some familiar faces: abnormal battery drain, issues with first and third-party applications, Bluetooth problems, problems with Wi-Fi, installation issues, lag, random reboots, and problems with Touch ID.
If these issues concern you, you might want to wait for the next version of macOS Big Sur.