I immediately got an improvement in download speed after changing one or two adapter settings as suggested above. I was getting around 20Mbps when other devices on the same desk were getting near 100Mbps.
- 802.11n/ac/ax Wireless Mode -> I forced to 802.11n, since that's what my router supports.
- Throughput Booster -> Enabled
Of course I want a boost to throughput! Why would I ever want this disabled?