I haven't used 40Hz so I can't speak for it but at 30Hz even my typing is slower, let alone mouse movement, which feels like it's pulling on a short string.

60Hz is a good sweet spot, but as people say 120Hz is noticeably better. At least at 60Hz I can type at full speed, scroll at full speed, and my mouse accuracy when clicking on buttons is good enough.

> at 60Hz I can type at full speed

There — there it is suggested that laggy console may slow down the entire main loop of our consciousness. Interesting!

Using a mouse on 30Hz is like molasses.

Honestly, at 30Hz you can feel the input lag. It always feels like the mouse is a little behind, and the key you pressed isn't quite there yet. It's only 33ms, but you can definitely see it.

60Hz is quite usable but if you are used to 120 or 144Hz you will notice it immediately.

Scrolling is gross too

Now you've got me curious. I've been playing with various Bluetooth and 2.4GHz-proprietary-wireless mice, along with a cheapie wired one, and never noticed much difference. But it's always been at the same refresh rate.

Brb, finding out what my screen maxes out at.

30hz is a non starter for me no matter what task I am doing.

It gives me some nasty headaches too.

Yes, I would even want 120hz. It makes using the computer feel so much more responsive and fluid.

You don't. But if you have a 144hz+ monitor at home it's just plane annoying. You notice the lag.

I'm currently fighting this. The trouble is I guess they move people around a lot and I noticed everyone has the same monitor...

You need 60Hz if you are making any user facing software for sure.