When I join a Quake Live server, the ads run fine, the sound is fluent and unbroken.

However, when after the "Awaiting snapshot" page, my screen turns a little darker. My fps runs at like 0.5 fps, and my lagometer jumps over the place.
Now I know this isn't my computer or my internet because I run League of Legends just fine, and Quake Live was working flawlessly two days ago.
I tried reinstalling the plugin, checking for viruses, using QLPrism, cleaning my registry, and nothing happened.

Note: I downloaded a "ig4icd32.dll" yesterday; this is probably it. I think it messed up my OpenGL graphics or something; problem is I have no idea how to fix it.

Any help would be appreciated!