Two suggestions for those reporting issues with 14.1.2:
1) Tell us exactly what machine you're on. [Or at least the model, processor, and RAM.]
2) Tell us whether the issue(s) are with non-Apple app(s), Apple app(s), or with the OS.
--non-Apple App issues: Non-Apple app freezes, crashes, or is working poorly, but things are fine when you click out of the app.
--Apple app issues (Finder, Preview, Voice Control, Siri, etc): same as above
--OS issues: Anything affecting machine as a whole, i.e. issues that are app-independent. E.g., cursor freezes, machine freezes, machine crashes, machine spontaneously ejects drives, etc.