Pros
I already play every game that allows it in 40fps, it is the perfect sweet spot between smoothness and fidelity. Not every TV or Display supports it though, it needs 120hz/VRR, so I think they still should provide a 30fps mode for people who can't use the 40fps mode. A 40fps target also seems more achievable than a 60fps one on consoles and handhelds.
Here is the DF video on the topic when Ratchet & Clank: Rift Apart first introduced their 40fps mode:
View: https://www.youtube.com/watch?v=QXi7uO7wxdc
Here is Alex talking about 40fps on the Steam Deck (timestamped):
View: https://www.youtube.com/watch?v=GF8NzlBiaOM&t=521s
- Smoothness is much better than the rather small jump of only 10fps would imply
- Visual fidelity very similar to 30fps modes
- Input latency is much better
- Not every TV/Display supports it
- Impacts battery life on handhelds compared to 30fps
I already play every game that allows it in 40fps, it is the perfect sweet spot between smoothness and fidelity. Not every TV or Display supports it though, it needs 120hz/VRR, so I think they still should provide a 30fps mode for people who can't use the 40fps mode. A 40fps target also seems more achievable than a 60fps one on consoles and handhelds.
Here is the DF video on the topic when Ratchet & Clank: Rift Apart first introduced their 40fps mode:
View: https://www.youtube.com/watch?v=QXi7uO7wxdc
Here is Alex talking about 40fps on the Steam Deck (timestamped):
View: https://www.youtube.com/watch?v=GF8NzlBiaOM&t=521s