Hello

I am using the latest firmware of both M4 and PS4 (non Pro). 

I canvonly get PS4 connected with ethernet cable to any of the M4. As soon as I switch to Wifi, it finds the network, it connects, I am able to do a test connection but I have no actual connection to the store, Upload fails and Download speed on test screen is a few kb, while cable is 50MB. 

I have tried turning off ipv6, turn off the fast switching, I turned off anything you can name it. I have also did port forwarding and nothing works, except on cable. 

All my other devices work fine. My PS4 worked well on my virgin router wifi too.