I have this problem as well. It's ****. I pay riot lots of money because they release cool skins and I support them as a company. And then I join a ranked game and lose elo because I disconnect every 2-3 seconds, minions are stuck all over my screen, and champions are invisible.
I can't play this game, it's one of the few games I can play on my laptop, and it's one of the few games I really enjoy spending an hour competitively on.
This really sucks Riot, I hope you can fix this soon because I like your company, your game, and wish to continue being a paying patron of Riot Games.
And I didn't even get a loss forgiven, it's not my side, my internet and computer is running just fine, it's the server side. I play League to be competitive and move up in the rankings and this kind of stuff really sucks : /