https://www.pcgamer.com/capcom-explain-why-the-monster-hunter-world-port-is-cpu-heavy/

We've been testing out the PC version of Monster Hunter: World on a variety of systems to see how it handles and the overall impression has been that it's a demanding port, but one that's loaded with graphics options.

Over on the Resetera forums, in a thread rounding up previews and impressions of the port, Capcom USA's vice president of digital platforms and marketing William Yagi-Bacon weighed in to explain why it's so demanding on the CPU in particular.