Stop download Pr0ns :v (From Battlelog -_-)
Anyways ,on a serious note .
This is what actually improved my pings,I had downloaded some movies on my torrents and I forgot to sotp it when it finished so first check if anyone in ur house forgot to stop seeding the torrents,it makes a hell of alot of difference .
Now make sure that you're playing when the res to the people in ur house aren't streaming,downloading or VoIP-ing with anyone as these can take alot of bandwidth . a simple text messaging won't really effect that much .
Even listening to music online takes up alot of bandwidth .
go to your default gateway (probably 192.168.1.1) and see how much bandwidth each user in ur house is using,if u think ur dad or siblings are unintentionally using alot of bandwidth which they are not aware of (such as downloading vid in background on their phones) simply limit their bandwidth so they don't come in ur way of gaming !
I hope it helped