help with 4g speeds on rooted phone

[rjfortune21]

I have a lg esteem metropcs . rooted the phone running open garden wifi i have it connected to my laptop to my xbox to share connection to get a open nat type.. but when playing games I'm only running the low 3 bar connection (light green) dropping to 2 bars(yellow) how do i get these speeds up and on my laptop it says connected to internet but wont let me view web pages just you tube no google of.nothong like that....... help please