I finished building my new gaming PC today. Since my phone's (Galaxy S9) internet is usually much faster than my house's internet, I tethered it to my new computer. However, I'm experiencing much, much slower internet speeds than on my last PC. So, I ran a few speed tests. On my phone, I got around ~20Mbps download speeds. On my PC, I got around ~0.80Mbps download speeds. This seems to make no sense, as I even have USB 3.0 ports that I can plug into instead of the 2.0 ports I used to have. I tried this, but to no avail. I did recently buy a new USB-C cable for my phone, maybe that's the cause?
My phone's tethering speeds have never been this slow, and it's really starting to sour my new computer's freshness.
What could possibly be happening?
Completely fresh install of Windows 10 Home.
Asus Prime X470-Pro motherboard.
Android Pie installed on my phone.
EDIT: I am already running RNDIS6. This is not my problem...