Let me help you with this.
The information you have provided is interesting because as you say this is not normal; however, there are some troubleshooting steps to try:
- Test Windows versions.
- You can run the Intel® Processor Diagnostic Tool for Linux. Here you can download it:
Intel® Processor Diagnostic Tool is software that will test the internal processor components and will generate a result.
Maybe other users with Linux can share their experiences here.