Hey

first my setup:

i have 3 X50 poe which are connected over ethernet + poe ( one cat 6 cable ). They are configured as accesspoints and the router feeds the main poe switch which then feeds other poe switches( all are 802.3at) throughout the house where the other two x50s are connected. 
 

i have dhcp disabled on the X50s as i want this to be done by the router (hope thats not wrong). 
fast roaming is also enabled. Rest is default. 
 

wifi is 2,4 and 5ghz over one ssid
 

Now the problem:

i often have the problem that i lose internet access, not wifi. 
sometimes its not working at all and i can solve it by sometimes chaning the mac address from

private random to static or something like that in mobile. 
for my smart home i habe the issue that it loses wifi and cant reconnect i always have to newly configure them. 
 

what am i doing wrong? Do i have to use one cable for poe and one only for internet and just connect the main AP with internet and the others just with poe power? 
 

thanks for any advice i am really frustrated and a milisecond away from returning them. 
 

All the best,

Abe