Try to enable Periodic Speed Test under site config.. you should see the gateway pretty fast after enabled this.

@Lens I¨m not sure, I remove my solution out off the cloud when i add tp-link gateway because lack off two factor in the cloud. I think device will update but not controller. but I¨m not sure. I have...

@Lens Go to Device and select APs then batch config, then you can upgrade a batch off APs

this is probably due to the EAP660's Beamforming, uap ac pro does not have this feature

@Emitplink Thats god news. so I hope :-) I have som office with shared internet and its not very nice with a bunch of SSID. i guess this come in V5 software ?

Mybe I dont know .. https://freeradius.org/ there are many freeradius on the internet for other operating system than windows so google and you will find :-) windows have not so mutch off this...