[CLIENT] DirectX error

I can play 4 games in a row fine but then randomly I get this error that tells me that my drivers aren't up to date.

I literally went to update every single driver but to no avail since they are all up to date.

So I restart- bam it works but I just lost 16 minutes of gameplay.

Do I really need to restart my computer after every match, Riot? This is ridiculous.