ashrr wrote: ↑29 May 2021, 14:50
I've had a chance to try your suggestions and I'm seeing the same issue. I have an Asrock Z370 K6.
It's possible that your board BIOS settings are messing with the CPU or it could be a faulty mb/cpu/psu.
Stock frequencies for CPU/GPU and clean Windows without tweaks.
Set useplatformtick and disabledynamictick to 'yes'. If it still drifts, leave it on anyway.
BIOS settings: Using your board's manual
OC Tweaker Screen
Advanced Turbo
disabled
Load Optimized CPU OC Setting
disabled
Load Optimized GPU OC Setting
disabled
- CPU Configuration
Multi Core Enhancement
disabled
CPU Ratio
36 (don't know what values show up in your BIOS but must make it stock frequency)
CPU Cache Ratio
36
Minimum CPU Cache Ratio
36
BCLK Frequency (it should set itself once you use XMP memory profile)
Spread Spectrum
disabled
Boot Performance Mode
Max Non-Turbo
Intel SpeedStep Technology
disabled
Intel Turbo Boost Technology
disabled
Intel Speed Shift Technology
disabled
- DRAM Configuration
Load XMP Setting
enabled
MRC Fast Boot
disabled
Advanced Screen
- CPU Configuration
CPU C States Support
disabled
Enhanced Halt State (C1E)
disabled
- Chipset Configuration
Primary Graphics Adapter
PCI Express
IGPU Multi-Monitor
disabled
- ACPI Configuration
ACPI HPET Table
enabled