WHY NO ONE IS repLYING?? i get into a game..after 5 - 6 mins it starts lagging. i can hardly move.wtf is happenin to me

ANyone here guys?? anyone else experiencing lag????

I am from Chicago. I am playing dota2 for the last years. Recently i have noticed i alg a lot in the MMR games. Either there is lag all the time or if i keep the net_graph on i can see my ping spiking from 90-100 to a staggering 2000 and again back down to 100. But this spike is almost 2-3 every 2 minutes. And yes , I am using US east or US West servers.
I googled it and found mention of something called ensage.. Matt , is this true , is there some script or software which can be used to "introduce" lag to opponents?
if not, please let me know what in gods name is causing this.
I am using WIN 8.1 64 bit , 8 GB Ram, Nvidia 860 graphix card in a ASUS ROG laptop