Mirco dc while playing League of Legends

The title explains it all, my wife and I play LoL on the daily just about and everyday we run into this issue where we have a split second disconnect where we get the "Attempting to Reconnect" loading bar in game. Now while that is happening we have no ping spikes, our internet doesnt cut off it just happens. I've done everything from checking all the cables, release/renew ip, flush dns etc. Yet this problem still occurs. Comcast support isnt any help in the slightest as they say "Problem is fixed and should not happen again" 4 times now. If anyone has some advice i would greatly appreciate it.

Edit : including restarting the modem, which only fixes the problem from anywhere to the very next League game after restart or 3-4 games in.