Internet speed on one machine is way slower than other.

My internet speeds (down) normally fall somewhere between 100Mbps and 200Mbps. I can get these speeds consistently on my laptop which has a wifi adapter capable of handling up to 866.7Mbps. However on my desktop which has a wifi adapter capable of handling up to 433.3 Mbps I consistently get speeds between 2Mbps and 15Mbps. I have tried many different solutions including: moving my router in the same room as the desktop, changing around properties of the network adapter, changing the channel my router uses, changing the wireless mode my router used, my final attempt was hard-wiring my pc into the router with an ethernet cable and the highest speed I hit was 16.3Mbps.
I used the same network, speed test, and browser for both computers.
I also know for a fact that my desktop is capable of getting better speeds, I lived in an apartment for a year where I got 120Mbps pretty consistently.
Desktop network adapter: Realtek RTL8811AU Wireless LAN 802.11ac USB 2.0 Network Adapter
Laptop network adapter: Intel(R) Wireless-AC 9560 160MHz

Edit: Running Windows 10 on both machines.

 

As far as I can tell I have nothing running in the background that is using any significant amount of network resources. At least not enough to show up in the task manager.

 

iBUYPOWER i-Series 506
SN: 7790-9799-D1E7-4B94-6