Gamebreaking Mac Bug

Played 2 ranked games in the past 2 days. Both times something fucked up HARD causing me to have to reconnect to the game.

First game: I don't have the best computer in the world, so I connect slower than most, but this time it was twice as slow. I ended up getting into the game at 45 seconds in. I bought my items and went to go to lane (top) but I literally could not. I would click top and it would path me STRAIGHT INTO THE ENEMY FOUNTAIN. There was nothing I could do other than recall. Tried again after I recalled and the only place I could walk to was straight down mid lane right into their fountain. I had to reconnect to the game, causing me to AFK for the first 8 minutes. Team was pissed, but we ended up winning so it was alright.

Second game: Again, loaded in slower than usual and got into the game at 30 seconds in. Bought my items, went to leave the fountain and I couldn't. I could not leave the fountain. It was like there was still a barrier preventing me from leaving it like before the 15 second mark. Had to reconnect and came back in at 6 minutes this time with my team super pissed and very behind. We lost this game.

I have no idea what's happening and I have no idea how to fix it. I'm on the verge of Gold but this is preventing me from even trying to get there. If anyone has any idea on how to fix this other than AFK'ing for the first 5-10 minutes of the game I would greatly appreciate it.