I have a Dell Inspiron with intel i7 and Windows 10. The past couple of weeks, my wireless has been running really slow. Normally running up to 6 GB/s, it is now running at 150 kb/s. The funny thing is that it also slows down every device connected to my wireless.
I don't do any gaming and I've run scans with Avira, Malwarebites, and Avast. Malwarebites founds a few things on it, which weren't critical, only suspicious, which I deleted, but still nothing. After I disconnect from my wireless and reconnect, it will work fine for about two minutes before going back to its old behavior. This leads me to believe that if it is a virus, it is something that is deep in there.
I was on the phone with Windstream for almost two hours with two different technicians, and have decided that it is not my wireless. I defraged it to see if that did anything, but no luck there either.
At this point, I am out of ideas and am almost to the point of reformatting it, but don't want to do that if I don't have to.