Supposed to be getting 1733 Mbps on 5 GHz.

Only getting:

I've moved it away from my subwoofer as it has a strong magnet. Maybe that was causing interference? Its up high and not obstructed by anything. Sitting on top of a tall boy. The only thing I can think of is maybe interference from neighbours?

That is the speed I'm getting on my Meta Quest 3. Its what's reported in the wifi settings.

There are no other devices connected to wifi. My computer is connected via ethernet from the modem. The NBN box is connected to the WAN/LAN port via ethernet.

I've done some reading and some people fixed the limited connection error by setting the clock manually on there. That was causing the 'limited connection' error for them. For some people it was set to get time automatically from the internet. I don't have it set to that. I've set it manually. And I've made the connection unmetered in the wifi settings.

Also I checked the time in the modem settings. I pressed get from computer. Not from the internet. So its set manually.

Would adding another antenna improve the speed or connection strength?