I have exactly the same problem with ASRock B150 Pro4/3.1 motherboard. Tried drivers from mobo vendor (v 20.2) and directly from Intel (v 21.0). Suggested fixes found on the web doesn't seem to help. Steam downloads work just fine with other adapters, connected via PCI, but kill the connection on I219-V... Please, help resolve this annoying issue, because downloading large gaming titles on 10Mbps is a pain...
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