Hi,
have the same issue atm. Even the same HW 🙂
My guess is, you're using a dynamic overclock for the precision boost (Level 4?).
Even had stability issues after I put a load in one of the VMs (crashed the whole system).
After I set a fixed OC, the system runs fine. Even displays the right frequency inside the VMs.
Currently running a 4.1 on all cores, never could get a stable 4.2 OC.
It would have been nice to use the precision boost OC, that way the system could boost single cores beyond 4.1
Try booting from a Windows Drive with your current OC and open HWINFO and CPU-Z. Start prime95 and let the stress test run for a few hours.
Check HWINFO and CPU-Z and note these settings
- Frequency of all cores (should be between 4150-4250) if not, the system is not stable and throttled itself or the CPU runs too hot
- CPU Core Voltage (not the highest value, the current value)
- SoC Voltage (again, the current value)
Disable the Precision Boost OC and set a fixed multiplier (42 in your case)
Set the noted voltage settings and stress test again, if the system is stable, unraid and the VMs are good to go.