Why is my wifi slow on Windows 7 and not Mountain Lion?

I have Windows 7 installed through boot camp. I purchased my MacBook Pro new 2012. When I use wifi in Mountain Lion, it works great. When I boot into Windows 7 I get SUPER slow speeds. OSX I get full speed at 60 Mb/s. Windows I get 1 Mb/s or lower. I updated OSX, and windows 7. I have an Samsung SSD 840 Pro and everything is running incredibly fast. I just need the wifi fixed. I also purchased an Airport Extreme about 2 months ago, latest version. Airport Utility is also up to date. Please help!