Refresh Rate's

[Modcon]

I have a asus rog swift pg279q at the moment it is set to 59 hertz in windows, should i change this to 144 hertz (in display adaptor properties monitor - tab)?
I have searched the net for an awnser too this and found an artical that says to set the refresh rate to maximum and also change vsync to adaptive in the nvidia control panel. should i do this?

 

[Modcon]

Use the on screen display to see if your fps is working correctly

how do i find this?

 

[Modcon]

Thanks for all the replies, think i have got it right now, playing batman arkham origins with vsync off runing at about 144fps, thanks again for all the help.