Simple tips to make firefox opening new tabs quicker

Type in URL bar:

about:config

Click "I'll be careful, I promise" and then, look for:

• network.http.pipelining 

when found it, double click on it to set the value to true

• network.http.pipelining.maxrequests 

double click and set the value to 8
Other tips:

• Clear cache and history
• Disable add-ons you are not using.

Go Firefox! Go!