Game Failing to Load

Sometimes when I start a game it will go to the load screen and then freeze there at 100%, but the game has already started and I didn't even know. The only way to fix the problem is completely relog and load in again, and then it's still a 50/50 chance I'll make it past the load screen. One time I didn't get in until my 5th try. This is especially frustrating because now my account has been flagged as a "leaver" and it's not even my fault; I was not allowed to enter the game because of this bug. I thought it must have just been some issue on my computer, but recently I have been having allies in solo queue with the same issues (always resulting in a lost game... RIP LP)