I've been researching gaming PCs for a few months to upgrade from PS4, and I noticed there is a big emphasis on fps, usually aiming to get above 60fps. Most of the games I've played on PS4 are 30fps, although maybe a few are 60fps. They all feel super-smooth, and I've never thought I needed higher fps. I also watch a lot of YouTube in 30fps, occasionally 60fps, and it also looks very smooth.
Maybe this is based on experience, but would you think 60fps is high enough for most games, or do you think you notice a big difference above 60fps?
All you have to do is move your mouse back and forth rapidly in Windows and notice the gaps in-between the mouse pointer arrows to know that fps really affects your target tracking. The gaps get smaller when you increase your refresh rate but they are still pretty disjointed. When we have 1000 hz monitors and video cards I think this will be the sweet spot for gaming. Only thing is you will need to mortgage your house to buy the NVIDIA 9090 Ti.