[OS] cpufreq returns current frequency lower than min frequency

[pauljurczak]

            .-/+oossssoo+/-.               paul@desktop 
        `:+ssssssssssssssssss+:`           ------------ 
      -+ssssssssssssssssssyyssss+-         OS: Ubuntu 22.04.3 LTS x86_64 
    .ossssssssssssssssssdMMMNysssso.       Host: B550M Steel Legend 
   /ssssssssssshdmmNNmmyNMMMMhssssss/      Kernel: 6.2.0-37-generic 
  +ssssssssshmydMMMMMMMNddddyssssssss+     Uptime: 2 days, 21 hours, 38 mins 
 /sssssssshNMMMyhhyyyyhmNMMMNhssssssss/    Packages: 3819 (dpkg), 39 (flatpak), 19 (snap) 
.ssssssssdMMMNhsssssssssshNMMMdssssssss.   Shell: bash 5.1.16 
+sssshhhyNMMNyssssssssssssyNMMMysssssss+   Resolution: 1200x1600 
ossyNMMMNyMMhsssssssssssssshmmmhssssssso   DE: GNOME 
ossyNMMMNyMMhsssssssssssssshmmmhssssssso   WM: Mutter 
+sssshhhyNMMNyssssssssssssyNMMMysssssss+   WM Theme: Adwaita 
.ssssssssdMMMNhsssssssssshNMMMdssssssss.   Theme: Yaru [GTK2/3] 
 /sssssssshNMMMyhhyyyyhdNMMMNhssssssss/    Icons: Yaru [GTK2/3] 
  +sssssssssdmydMMMMMMMMddddyssssssss+     Terminal: gnome-terminal 
   /ssssssssssshdmNNNNmyNMMMMhssssss/      CPU: AMD Ryzen 7 3800X (8) @ 3.900GHz 
    .ossssssssssssssssssdMMMNysssso.       GPU: NVIDIA Geforce RTX 3050 
      -+sssssssssssssssssyyyssss+-         Memory: 14204MiB / 64215MiB 

Python 3.11.6
psutil          5.9.5

This test script

print(psutil.cpu_freq())

produces:

scpufreq(current=3210.3806250000002, min=3475.0, max=3900.0)

Not sure if it is a fault of psutil, but would like to know if there is a fix to this. Using Gnome CPUFreq applet, which is supposed to set all CPUs to 3.9GHz, but doesn't according to its own CPU frequency display.

I'm also getting this:

scpufreq(current=3979.593125, min=3900.0, max=3900.0)