Black screen after champ select (Mac)

Title says it all really, this issue happens with all game modes. I've tried repairing the client, reinstalling client, turning off firewall, resetting router and resetting my mac. I've even tried the spam enter button and enter+delete+space keys, sent a ticket to riot support but their not replying back. Any other suggestions, kinda desperate now and want to jump back into rank before season ends.