Client Crashing A lot

My client has been crashing A LOT recently. On both North American client and the PBE client, my league has been crashing. Sometimes when I'm logging in, sometimes when I enter a queue, and most of the time when a game begins to launch. My computer isn't a push over and can easily run league and several other programs just fine, and the issue only started a few weeks ago. Don't really know what's causing it to break, but it's beginning to get on my nerves. [zombie-nunu-bummed]