It's possible that there is an issue with the way your system is reporting the CPU frequency. The Task Manager and Ryzen Master software can sometimes show different information, depending on how they are measuring the CPU frequency.
The Ryzen Master software measures the frequency at the core level, which means it will show the frequency of each individual core. The Task Manager, on the other hand, measures the average frequency of all cores, which may be different from the frequency of a single core.
It's also possible that the CPU is running at a higher frequency due to power management settings in your system. Some systems will automatically increase the CPU frequency when the system is under heavy load, even if no applications are running.
To check this, you can go to the power plan settings and make sure that you are using the "balanced" power plan, this way the system will automatically adjust the power usage, and the CPU frequency based on the workload.
Another thing to check is if there's any process or service running in the background that's causing the CPU usage, such as software updates, anti-virus scans, or background tasks.
If the problem persists, you may want to check your BIOS settings to see if there's any option to control the CPU frequency or to disable any power management features that may be causing the issue.
It's also a good idea to check if there's any BIOS update available for your motherboard and apply it, it may solve the problem.
