I was looking at speeding up boot times and came across somewhere a suggestion to make sure "microcode" was installed. Checking my Untangle showed it is not installed. Don't know if it will boot faster or not, probably not. But I wonder why it is not installed? From the debian wiki.
https://wiki.debian.org/MicrocodeProcessors from Intel and AMD may need updates to their microcode to operate correctly. These updates fix bugs/errata that can cause anything from incorrect processing, to code and data corruption, and system lockups.
It is very difficult to know for sure whether you need a microcode update or not, but it is not safe at all to just ignore them. You might not notice their effect and have precious data silently corrupted, or an important program silently misbehave. Or you could experience one of those unexplainable and infrequent software issues (such as kernel oops, application segfaults) or hardware issues (including sudden reboots and hangs).
Build: 16.2.2.20210223T082805.9e9db41866-1buster
Kernel: 4.19.0-11-untangle-amd64