USB wifi as mobile hotspot: 5ghz 400mbs not 866hz

[GaryJKings]

Hey, I'm drawing a blank here so hopefully someone in here is a little smarter.

I'm using a USB wifi adapter on my PC as a mobile hotspot, specifically to connect my Oculus Quest 2 straight to my PC rather than my router to decrease latency when playing PCVR games.

This wifi adapter advertises itself as being capable of operating at 866mbs on the 5ghz band, and 400mbs at the 2.4ghz band. But when I connect to my oculus, it reads as 5ghz but only reports a speed of 400mbs.

I'm using a TP-Link AC1300 high gain usb (archer T3U Plus), if that helps.

I'm unsure why this is but I've jumped through all the driver update hoops, and messed with a few settings I only half understand in Device Manager to force it to 5ghz by setting it to 802 11ac. This is what forced it to 5ghz but I'm not sure how to improve it from here. Any ideas?

 

[GaryJKings]

If that's the case, I'm curious why it reads exactly 400 rather than 433. Disappointing that it's stuck on "half" but it's just good enough at what I need it for to have made it worth keeping around. But had I known this, I'd probably have spent a little more.

 

[GaryJKings]

Yeah, it's certainly not a bad wireless adapter, but I am using it for a deeply specific purpose, and took that risk when I bought it. Glad it works for that purpose as well as it does. Thanks for your insight. I half expected an answer like this but thanks for going into detail.