Lag spikes and game crashing

I suddenly started getting frequent lag spikes, where my fps drops to 0 after starting to play summoner rift games with a few friends. When i tried to restart my client I received an error message, which after i tried resolving I could enter the game. The lag spikes are prevalent in the game lobby and champion select as well. They weren't present in teamfight tactics. This is the image of the error.

We're testing a new feature that gives the option to view discussion comments in chronological order. Some testers have pointed out situations in which they feel a linear view could be helpful, so we'd like see how you guys make use of it.

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