@BigPapytoIt’s likely an issue with your Ethernet cable. Try replacing it with a new one or using a different cable to check if the problem persists. Don’t use the same cable. I would guess you’re using the one that came in the package, which some came faulty. Just something to point out....they may work as intended but randomly do drop to 100Mbps instead of using full throughput due to bad coiling, etc.
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BigPapyto reacted to DARKNESS in Low speeds on Ethernet and Wifi despite updates.