Setting Fast Browsing for Mozilla Firefox

Open Firefox, type "about: config" in the bar Addresse (URL) and ENTER. This will bring our menu to set the parameters for Firefox.
Click 2x settings and enter these numbers - for true / false booleans - they will automatically change so 2x click
Now change the code:
browser.tabs.showSingleWindowModePrefs = true
network.http.max-connections = 64
network.http.max-connections-per-server = 20
network.http.max-persistent-connections-per-proxy = 10
network.http.max-persistent-connections-per-server = 4

network.http.pipelining = truenetwork.http.pipelining.maxrequests = 100
network.http.proxy.pipelining = truenetwork.http.request.timeout = 300
nglayout.initialpaint.delay = 0
network.http.request.max-start-delay = 0
Network.dns.disableIPv6=true

if the code does not have than you can made it to this way
1. For True / false right-click-> new-> booleans-> create parameter-> true / false match on code made.
2. For numbers right click> new> integer> set the number according to the parameters are made
Restart mozilla.
please ask if you are not yet clear