The 5600x cannot find the amd option in the control panel after installing the power management support using the chipset installer, and the processor test score of cpuz is even lowered
Are you sure you've installed the right update?
Which one did you use https://www.amd.com/en/support
5000 series Ryzens don't require special power management plans so the chipset driver installer doesn't install them. AMD suggests using the standard Balanced power plan that comes with Windows.