Hello! I am an Independent Advisor, I would love to help you out!
The most likely scenario for this is that the internet plan you have (or the router) is slower then what your network card is capable of.
Most likely your network card is capable of 1gb/s. Most internet plans do not go this fast.
Do you know the speed of your internet service from the provider?
You can also go to a site like fast.com in order to test what speed you are getting.
Increasing your network utilization would not necessarily make your internet faster, that relies more on the service from your internet service provider as well as the speed of whatever server you are connecting to as well (to download files, discord servers, etc).
Hope this all makes sense and helps! Let me know if you have other questions about it, or if I need to clarify anything.
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.