Internet speed capped at 100 mbits on Realtek PCIe Family Controller, until I manually replug the cable

Basically, until I unplug and plug back my cable, I'm stuck at a 100 mbit connection. Replugging it fixes the issue, but I'd hate to do this every time I start up my computer.

Could someone please share some insights as to what I can do to fix this?

I've just downloaded the latest drivers for Realtek PCIe Family Controller on Windows 10.

I've also tried removing Auto-Negotiation and various other settings like Power savings mode and what-not to no avail.

I searched over the internet for workarounds, but most people are stuck trying to identify if they even support a gigabit connection, whereas I clearly do - it's just a funky glitch requiring manual labor to "fix".

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