Before troubleshooting your hardware, ensure the Steam client itself is not restricting your speed.
Slow Steam downloads are a common frustration for gamers, often caused by a combination of software settings, hardware limitations, and network congestion. Whether you are dealing with a download that has dropped to 0 bytes per second or one that is simply crawling along, most issues can be resolved with a few targeted adjustments. 1. Optimize Internal Steam Settings steam download slow