No game will utilize 100% of a multicore CPU. MSFS is a very light-threaded application, so it leans heavily on only a few threads to do 90% of the work. In this aspect, the 13900K is a significant improvement over the prior 12th gen due to its high single-core boosting performance at 5.8 Ghz. I routinely see my 13900K boosting multiple threads to 6 Ghz.
I’m not sure what you’re holding out for, as there are multiple reviews and user experiences on this forum. If you want to see a benchmark, here’s one: a near 30% improvement over the 12700k.
