You're correct that it has a significantly bigger impact in reaction-dependant games. [1] Civilization 6 was just a good example of a CPU-heavy game, regardless

You're correct that it has a significantly bigger impact in reaction-dependant games. [1] Civilization 6 was just a good example of a CPU-heavy game, regardless of whether those frames are that useful. However there's also the case of normalization. After using a high refresh rate monitor, even something as simple as moving the cursor in Windows feels laggy with lower refresh rate monitors. -- [1] This being all reaction-dependant games, doesn't have to be FPS. Even fast paced pong qualifies.