How to keep my ping low in this situation ?

[turn_pike]

So I have a low speed internet, 1 mbps (yay 3rd world country).

I share the pipe with two other person, though mostly it is just one laptop that they share.

With max speed at only 150 kb/s opening any website will saturate the bandwith. Thing is I do like to play online games like League of Legends or Battlefield. While the games only use like 5 kb/s or so, my ping would go to the abyss whenever other people use the net (we're talking 1500-2500 ms ping) and I basically would certainly lose the game for my team.

The router given by the ISP is very basic and has no QoS or other advanced stuff. I'm thinking about flashing it with dd-wrt or something.
But before I do that let me ask you this :
Is there other way for me to ensure that my packets somehow get top priority ?

The other guys dont care about latency while I do very very much.

 

[Mushkins]

QoS is pretty much it. Though I wouldn't expect much considering your 1Mbps connection. It's still got to process the requests from the other users eventually, and that means you're going to get spikes of latency when it does. There's not enough bandwidth to handle both simultaneously.