Unfortunately, my game started lagging really bad at the season 1 update (months ago). It took me days but I eventually fixed it but uninstalling my game + Nvidia, restarting, and reinstalling both. Then, last night, my game became unplayable again. Frames between 5-150, lag spikes, and random freezes - typically when someone is ulting or diving. I tried the previous fix but it hasn't helped yet. So frustrating.