AP + Client simultaneously on 5GHz is problematic

Hello, lately I tried to migrate to 5GHz due to 2.4G congestion for my client. I can do both AP+Client at 2.4GHz just fine, but for 5GHz its not the case. When I set it up, it just scrambles and both goes AP or client.

I did some search and found little to nothing about it. Some had this issue after upgrading to v19, DFS channels or ath10k-ct firmware. But there is no absolute solution to this.

I want to know if anyone there knows how to fix this for good.

edit: device is Archer C7 v5.

You cannot do this on a DFS channel (without disconnects). It must be on a non-DFS channel.

it was on channel 44 at 40MHz.