Well, I'm officially done with this game until they fix their 3.9 Comcast issue. Ever since the 3.9 patch in July, lots of Comcast users have been constantly getting disconnected. It's just not worth the hassle anymore.
I thought it was my modem or router or service or something. But then I realized it only crashes when I play League. So I taxed the hell out of my internet by streaming Twitch, Netflix, playing FFXIV, streaming music, and so on for an hour. Nothing crashed it. Second I get on League, my upstream power level shoots up to the 50s, which is dangerous for the modem. And, poof, it resets, I DC, and it's over.
Until it's fixed, I just can't play it. It's not worth getting disconnected every 5-10 minutes.