[masklinn]

Games have necessarily become more and more parallelised (whether through multithreading or multiprocessing) over the last decade, as even consoles are multi-core these days.

Both XB1 and PS4 have 8 cores (2xJaguar modules). Both also reserve one of the core exclusively for the system, so a single-threaded game would only leverage 14% of available CPU compute power.

The Switch is somewhat similar through to a lower extent: it effectively uses a quad-core ARM, with one of the core reserved to the system leaving 3 to game developers.