@benjamin24 

Found the issue to be a setting on the modem/router.

last week i factory reset the modem and entered in all the isp details again and now ive had trouble free mesh technology since!

Completely unsure which setting it was but obviously it was some sort of connection issue to the internet.

Im using the DHCP server on the modem/router and the mesh is configured in ap mode with smart DHCP enabled.

Modem to internet is ADSL2 atm (waiting for fibre upgrade) using standart RJ12 cable then Cat 6 from the first Ethernet port to the tplink 4 port poe switch and then i have 3 Cat6 cables that i ran through the roof straight back to the router using 1 poe port each (standard star connection)

almost a week now of trouble free internet *fingers crossed* !!!