League keeps dcing me randomly

I recently got a new router because the old one was really crappy. On wifi, the games i play, SOMETIMES it randomly dc's me and takes like...10-15 seconds to reconnect me, and this has been consistent since i got the new router. This also happens to me on Heros of the storm, accept i have to literally log out of the game, then log back in to get my connection back. Is there anything I can do to make this stop happening? I refuse to do ranked with this situation happening.
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