1. Type “about: config” in url
2. Change the following parameters:
Amendment “network.http.pipelining” to “true”
Amendment “network.http.proxy.pipelining” to “true”
Amendment “network.http.pipelining.maxrequests” to some number like 30.

Variable: browser.sessionhistory.max_total_viewers Value to 0

Variable:browser.cache.memory.enable value to false

Note : It worked for me,but some of them it may not work