[Support, Ask the Community] League has become the only game in my library to lag

My ping spikes from 80 to 400 every time an enemy comes out of shadows and I genuinely don't understand why. Battlefield, with 64 person Lobby size has near perfect connection compared to League of Legends. -FPS holds steady at 120 -Internet speed holds at: 3mbps download 5.75 mbps Upload and a 14ms Latency -I've tried everything from setting the internal clock to turning off wifi auto-connect. Help?

Sorry I can't find the Support tag. Also context: before a couple patches ago, my connection was perfect, recently I've had to continually reinstall due to freezing in the loading screen which won't go way. Maybe a connected problem? I'd like to at least know if this is a me problem or if its a problem with the game.