Your computer's network interface card (NIC) settings can sometimes prioritize or accidentally throttle certain traffic types.
Right-click your Ethernet adapter > > Configure > Advanced . ethernet slow download fast upload
Dealing with slow download speeds while your upload speeds remain lightning-fast on an Ethernet connection is a common but frustrating network anomaly. Typically, download speeds should be significantly higher than upload speeds because Internet Service Providers (ISPs) allocate more bandwidth for downstream traffic. Your computer's network interface card (NIC) settings can
: QoS settings on your router or Windows can prioritize certain data (like gaming or VoIP) while throttling others (like bulk downloads). Check "Speed & Duplex" : Press Win + R , type ncpa.cpl , and hit Enter. Hidden software processes can consume massive amounts of
Hidden software processes can consume massive amounts of download bandwidth while leaving upload capacity untouched.
Find and ensure it is set to Auto-Negotiation or your plan's maximum speed (e.g., 1.0 Gbps Full Duplex ).