Why do Games propose both 59 and 60 fps options?

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What kind of difference can it bring? Isn’t one fps not a big difference?

In: 4

It depends on your monitor or tv you are playing at.
Monitor and tv’s can both have 60fps or 59.94fps, depending on manufacturer. It has some things with signal processing and ac voltage frequency, but we do not want to make this physics class.

So, if your monitor/tv specifically says it has 59.94hz, set it to 59. Otherwise set to 60 to avoid potential image tearing due to failed vertical sync.

If your display has a 60hz refresh rate, and you’re using v-sync, limiting the framerate to 59 will decrease latency, but also cause some stuttering.

If you have a display with variable refresh rate, limiting the framerate to just below the monitor’s maximum refresh rate will still reduce latency, but won’t cause the stuttering.

as for WHY it reduces latency, the frames you see are generated a bit like an assembly line. If the bottleneck is at the end of the line(the display), each frame has to wait for the next step to be finished with the previous frame before it can move forward. If the bottleneck is at the start of the line(before input is sampled), the next step is always ready for the frame immediately, with no waiting. Another analogy would be traffic on a highway, the number of cars per second is the framerate, and latency is how long a single specific car takes to get from the start to the end.

TVs in the Us were originally based to work based on the frequency of mains electricity. The Us sues 60 hz mains electricity so a rate like 30 or 60 frames per second is easy to do without much in the way of expensive tech. (European TV standards where electricity is at 50 Hz use 25 and 50 fps instead)

Later color TV was a thing and the NTSC standard had to move slightly away from 30 hz to make that work to 29.97 hz or 59.94 Hz for interlaced stuff.

This sort of stuck around long after it was necessary and even today TV sets may be optimized to work at that rate while computer displays often work with the flat 60 hz)

Ideally both your computer and your display should be able to use whatever frequency, but giving the option of either 59.94 or 60 hz ensures that it works well with any setup.