Terrible keyboard lag

In the past week I've only been able to play 2 games a day (aram) . First game usually goes decent but in the second one I have terrible keyboard lag (pressing q and it takes at least 3 seconds for it to go off, summoner spells and other abilities as well). It's frustrating. Sometimes I press tab and instantly regret it because then I can't close it anymore. Also if I type in chat it takes ages for the writing to appear. Once I close League, my keyboard works perfectly. It's really frustrating. I looked this up and saw you can reset your configuration file but that didn't fix my issue. I reinstalled league of legends and it also only fixed it for one match. Did anyone experience this? If so, how did you fix it? I have a laptop keyboard. The laptop is fairly new so idk what the problem could be. TL;DR: terrible keyboard lag, configuration file reset didn't fix it, lol reinstall fixed it only for one match, I don't know what to do.

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