I've recently been having this issue in every match (ARAM, SR, TT). The video keeps freezing every few seconds but I can still hear the sound from the game progressing. This happens for the entire match and makes the game practically unplayable. Yesterday I even got a bugsplat.
My computer is a Macbook pro running Sierra and the software is up-to-date.
I've recently experienced the same thing. My PC has very good specs and never has problems running any game on high settings (league included) until today. The screen freezes, and many bugsplats. Recent patch causing issues?
I've had this computer for 2 years and have never had an issue with LoL before. I even tried following: https://support.riotgames.com/hc/en-us/articles/201761974-Bug-Splat-and-Game-Crashes#section-mac but it didn't help either...
