R7000 -> RAX80 vlan is horrible

The issue is simple and yet impossible to solve probably without a firmware fix.

I have a perfectly working R7000. I bought a RAX80 thinking to get some boost in coverage/wifi.

I used exaclty the same settings and this is the result:

The download speed is fine (speedtest) but the upload speed is really bad (1%). When I am doing a video call it constantly lags and throws issues during video calls.

With https://packetlosstest.com/ I can see +70% packets drop constantly.

This is my setup

Outside line -> Netgear (vlan)

The funny part is if I just use the RAX80 as AP without vlan it works perfect

Outside line -> Netgear R7000 (vlan) -> Netgear RAX80

Basically VLAN is broken :\