I believe you just need to cache the guest user name and password to the computer they are using just once. Try logging in on the guest user once and it should be good.

dsahuc wrote Thanks! That works much better now! I wish TP-Link would maintain their worldwide support websites better (neither the FR or US websites are referencing that firmware) or just centralize...

I can confirm on my end I successfully was able to connect 23 devices at one time.

It all comes down to is wiring of the house. I was getting 110-160Mbps in the first outlet I tried. I then tried different outlets and I was getting around 600-700Mbps

Did you make sure you're pc is on a static ip?

I have similar issues. I got a pair of av500, av600, and barrow some av1200. av1200 performing the worst out of the two models. If anyone has any tweaks to improve performance please share.