Pre-game loading and post-game recap taking excess time and resources

As the title says, I've had an issue with the loading screen and post-game recap taking significantly longer than they used to to load (several minutes in both cases). I haven't noticed changes with any other unrelated programs that I run. When I bring up the LoL client in task manager, it will state that the program is not responding. It will usually snap back to normal, but it is rather inconvenient if I want to type at all in the post-game lobby, or even alt-tab while a game is loading.

I admit that it's possible it could be related to my own computer, but I don't understand why only League is being affected. Is there a record of this type of bug, and is it fixable?