Please give details explanation on recaptcha sitekey addons setting

[toan]

Can anyone support to explain in details of each setting on below. and how to set it for the best solution.
1. what is attempts to recognize captchas.
and so on.

 

[VladZen]

If you hoover mouse coursor on each setting, you'll see explanations.

 

[toan]

If you hoover mouse coursor on each setting, you'll see explanations.
Посмотреть вложение 32208

thanks for your reply. but it is not so clear, just a simple explaination only. example for the right screenshot. what is waittasktimeout. what is the unit. s or ms. what should we put. it is depend on thread or server resource?
thanks