League of Legends freezes while I'm in the battle Patch 6.5

When I choose My Champion and after that when the game begin hangs for no reason until tools in game you can’t do anything just watch Champions moved and do anything I Dont know why ??I want Help me (RIOT) please update this patch soon because patch 2.6 was fine with me I can’t playing the game since patch 6.2 I have windows 7 64-Bit