Ethernet connection regularly dropping on Thunderbolt 4 Dock

Hello, I recently purchased a Blade 15 with accompanying Thunderbolt 4 Dock and have bee experiencing significant challenges with respect to connectivity on the Ethernet port of the dock. Specifically, when I start to copy large volumes of data over the Ethernet port, my connection drops regularly (e.g., every 5-10 minutes). Under less demanding loads (web browsing, e-mail, even voice conferencing), the connection drops are *much* less frequent. Since it's a newer machine that is replacing an older one, I have some copy tasks running that are copying large volumes of data, though, and that means that my connection is dropping every 5-10min. The problem is resolved by unplugging the RJ45 connector and plugging back in again. While I have not tried replacing the cable yet, I'm using the same cable that my previous laptop used for >2 years without a single problem. Any thoughts would be most appreciated!