First for the speed issue, it is suggested to follow the instruction below to narrow down the issue first: https://www.tp-link.com/en/faq-2170.html For the port forwarding issue, which is port is not...

Please follow the instruction below to do some test and narrow down the issue and then please post the details and test results so that we can continue to help you....

Hello, the Archer VR400 does not support smart connect yet.

Hello, Archer VR400 does not support airtime fairness function. Hope you understand.

Cause the current product is TL-WPA8730, to guarantee the performance, it is suggested to buy the 7/8 series, like TL-WPA7510, TL-WPA8630KIT TL-WPA8730 etc....

Glad to hear that you solved it finally. Thanks for your feedback. If need any further help in the future, just let us know.