well, XP11 with Vulkan has very good mutlicore support, as an example. MSFS can’t even make a NASA computer faster (unless it has a 20 Ghz single core CPU). But let’s wait for the DX12 update, maybe it will be better then. LOD400 is of course “impossible” because you immediately enter the “main thread limited” area and can do whatever you want (walk around the table 20 times, tap on the PC 3 times, install drivers 20 times, etc.). :-))…you can see it in the scattering upwards - the fast systems are not really faster either!
cheers !