boju :
Input lag as in vsync input lag?
More info is needed.
System specs
Monitor + hz
And what you do with the computer
No, I don't use vsync. What I usually do is play games and I also get input lag in those to.
Monitor:https://www.amazon.com/HP-Pavilion-21-5-Inch-HDMI-Monitor/dp/B015WCV70W/ref=sr_1_5?s=pc&ie=UTF8&qid=1531118064&sr=1-5&keywords=gaming+monitor&smid=ATVPDKIKX0DER
60hz