Internet lags (too slow)

my internet connection(broadband) was intermitent, i increase the height of the antenna(canopy) it solved the problem but the problem now is that too slow(lags)in online games. is there a solution to speed up the lagging of internet connection? or do i need to configure the canopy from previos height to the recent height( 25feet to 35feet) in order to receive a better signal? what will be the configurations to be done? is there a software or program to be installed in order to speed up my connection?
thanks