[CRASH] 6.6 Aurelion Sol mirrorlane crashed my computer

It all started off with a normal game. I picked Shen and I got matched up against a Graves on top lane. As soon as 5 minutes into the game I wanted get an overview on how the other lanes were doing (essential for shen r...), but when i briefly took a look at midlane (an Aurelion Sol mirror matchup) the game started to get stuck: within seconds, my whole computer was forced to an emergency shutdown, which it couldn't fullfill properly. (Just for information, I own a gaming-pc, surpassing the recommended hardware requirements by miles and it has never even come close to crashign liek that ...) Afterwards I tried to find any problems, but there was no possible cause to find for this crash leaving me with the assumption, that this is solely league-related. So I'd like to ask, whether someone else has encountered this problem so far.