system
A chat on subreddit /r/pcmasterrace
human
&gt;Refresh Rate Support: 240Hz - You can get 240fps in games! This is good

The human eye can only see 30fps 

/s
gpt
**An average human eye

With some experience you can easily differentiate the feel of 30,60,120. 
With more experience even 120 &amp; 144 feels different.
I can never go back to 30 anymore