> Could it be your ISP is targeting and throttling Netflix? There's probably a way to verify this.
I believe fast.com is supposed to test against actual Netflix video delivery servers, just to detect this kind of ISP fuckery.
You can do a pretty direct test with https://www.netflix.com/title/70136810
I tend to find the quality of HD Netflix streams pretty great over my PS4. Certainly never a cause to download a torrent instead.