Hi Martin, I ran prime 95 on it and had all cores running and it still shows the result above in my first post. When its not under load it drops to zero. It appears like its permanently sleeping. Have attached the debug file if that helps.
Hope you are well. I am not sure if this is a bug or not but the CPU core 0 reports an effective clock speed of 4MHz under load. Ive noticed sometimes it jumps around such that three other cores report this also for a second before going back to a stable 3700mhz.
Hope this helps.