Black Screen After Victory/Defeat Screen

After I hit continue I get a black screen with just the cursor, stays like that for a while, also loading into games has taken awhile or the client becomes unresponsive when I load into a game. Reminds me of this old thread: https://boards.na.leagueoflegends.com/en/c/help-support/hAFsKEEz-black-screen-after-match-completion

don't have lolwiz or lolreplay, I was wondering if it was the new discord overlay? Please help :D