1:1 mode and input lag

[allthegoodmemesaretaken]

i recently bought the Viewsonic XG2402 and i found out that it has a 1:1 mode, I do know that 1:1 pixel mapping only uses the pixels required from the resolution i've set, but... Does this reduce the input lag?

 

Between "Full" , "Aspect" and the 1:1 mode which one should i use in order to reduce the input lag?

 

Thanks in advance for any help you are able to provide.