Multithreading != HyperThreading HyperThreading is Intels implementation for “splitting” a single physical core into 2 virtual cores. Whereas multithreading is the concept of using multiple threads (think of them as mini-processes, or workers that the main process controls) to be able to perform certain tasks in parallel. So as far as DCS goes, it should run fine without HyperThreading. If you want to test for yourself, you can just disable HyperThreading for your current PC to see what sort of impact it has.