Certain wifi parameters reduce speed from 800Mbps to 150Mbps?

Installing and Using OpenWrt Network and Wireless Configuration
1

Hey all,

I'm hoping someone can explain to me why certain wifi parameters cause such a huge performance hit to my router. I'm guessing it is something to do with certain types of wireless frames having to be transmitted at low speed?

So these things cause my speed to drop:

  • If I switch from required management frames to optional management frames. I specifically tested having multiple SSIDs, one set to required (my main network), and one set to optional (my iot network). My main network speed suddenly drops.
  • If I enable wnm_sleep_mode
  • If I enable time_advertisement

Are there any other wifi parameters I should be wary of?

I'm using a Banana Pi R3 (mt76 driver)