Its not your internet thats running slow its your computer,I've had a look at your attachment and quite frankly you have at least 15 processes running that are gobbling up your CPU time.
In particular Explore.exe appears to be running twice concurrently as well as i explore.exe.I'll bet my lucky penny these are malware.In addition some of these other processes do not need to be running at all and should be disabled via Task Manager.Also tweak your computers start ups as some are ambigious and dont need to run 24/7.