On a lcd screen does 5s matter compared to 2s

Lower is better. Its the screen refresh rate.

But this mattered more 5 years ago when units were in the range of 10 to 30ms than now. You could see the lag in some high action sequences on slower monitors. 2ms vs 5ms? Like Timeop said, not much difference today.

When it comes to montiors, don't worry about the specs. You have to look at it every day. Put eyes on target and select the one that looks best to you. Pick one you love and you will be happy with it.