The latest AGESA 1.0.0.4 microcode update for AMD Ryzen 3000 processors seems to enhance all-core boost clocks and improve boot times, according to preliminary test results. This update is in beta and will soon be seeded for all compatible Ryzen motherboards, but it does not yet contain all the improvements that are touted to be available in this microcode release.
https://www.notebookcheck.net/Latest-AMD-AGESA-1-0-0-4-update-improves-all-core-boost-and-boot-times-for-Ryzen-3000-processors.440380.0.html