Don't listen, no need for reinstalling your OS for ET although using Windows8 is good reason to reinstall an other OS, but because of ET.
Just run in in comptability mode, oh ye and run it as an admin!
Miraro his question btw is a good one, playing wireless?
If you're not playing wireless and this settings don't help, can you send your cfg so we can check that. I'm a hero with fps settings, i love my powerpoint-ET-laptop game