Improving Proxy usage for any site

Ok here’s the quetion.
the site is really bad at enhancing their website.
it’s in x-www-form-urlencoded fornat,

the site takes 1gb of proxy just to check 10k lines.
if i use unlimited proxies the site bans almost all of them.

so anyway to maximize proxy usage? any tweaks? i already did reg check,username and password limit and everything in text book,thank you all

just now i uncheck auto redrict and response content.
and added 302 as success and 200 code as fail.will that reduce proxy usage?