Client Crashes/Login Issues

Immediately after Christmas, I started having this issue. I open my client and try to log in. I found a page that told me to change some settings in Internet Explorer, that worked for myself and others (temporarily). I was able to log in, and after a couple minutes in a chat, the red diamond of death tells me I've disconnected, though I'm skyping someone and they can read what I'm saying. I start up a ranked game with him, and just before everyone has chosen their characters, I get an error that I've disconnected. Then I'm stuck in the champ select until I shut the client down, usually by force, and relog. The "logging in" symbol stays for an extended period, then tells me I can't connect to the server. After restarting the client several times, I'm finally able to log in and reconnect to my match about 2-5 minutes late, if at all. After all this, I'm usually able to get through the game with minimal lag, though I do experience quite a bit from the server. I have great internet and have no problem on normals with lag, only ranked. After the game ends, and I click "victory/defeat" the client crashes with no bugsplat or anything, and I can't even get to the post-game screen to honor/report/add friends. I've seen that some people can access the post-game screen by clicking the riot symbol in their taskbar, but when I mouse over it, it goes away. I then try to reload the client, and it says there's already an instance running, so I switch up to a new client. Repeat process. This is incredibly frustrating, because when I can't reconnect to a ranked game when this happens, I lose lp. I've probably gone down a considerable elo from only this issue, and I have read that a great many others are having the same issues. I am yet to see a response from riot on this.