Difference in Response time in NeoLoad Report and Browser's console.

I have executed my script for 1Vuser. For a particular request, NeoLoad is showing 23Sec but when I checked on Browser's console, it is just showing 3Sec.
There is very large gap in the response time.
When I was checking from Browser's console, I have cleared Browser's cache and it was the same machine through which I have executed the NeoLoad Script.
I have checked that particular request on multiple machines after that, it is taking around 3 sec only.
What can be the reason of it, and how to fix it?