I am using the Archer AX 1500 as an access point. I disabled WiFi on my ISP router and am only using the AX 1500 for WiFi. I connected my PC via LAN to the AX 1500 and I get the full 250 MBit/s download speed, meaning, the connection is fine.

BUT, all my WiFi devices only get 2 MBit/s download and 15 MBit/s upload. I already tried everything:
- Firmware update

- Rebooting routers

- using only 5Ghz or 2.4Ghz WiFi

- disabling OFMA, Smart connect, AP Isolation

- set Group Key Update Period to 3600

- I am standing next to the router

- on the WiFi device it says 433 Mbit/s link speed

- I used WiFi Analyzer, but there is no problem

I had the exact same issue with my ISPs router, which is the reason I bought the Archer AX 1500 in the first place. But somehow the issue persists.

I have no idea what causes this issue. 2 MBit/s is really not acceptable!