Typically when receiving any review hardware preloaded with Microsoft Windows I tend to run some Windows vs. Linux benchmarks just as a sanity test plus it still seems to generate a fair amount of interest even though the outcome is almost always the same: Linux having a hefty performance advantage over Windows especially in the more demanding creator-type workloads. As an unexpected twist and time consuming puzzle the past two months, when recently testing out the Lenovo ThinkPad P1 Gen 8 it’s faster for numerous workloads now on Microsoft Windows 11 than Ubuntu Linux.
My guess is that the Linux install, upon not recognizing the processor, is designed to assume the processor is so old to not be recognized and is setup for “potato” mode.