@RobAmann umm curiouser and curiouser.. in that case we cant rule out the switch but usually they are bulletproof, hence my money was on the plugs.. however I could be wrong! :) Try it again under...

@Jinx-ITROB Hey Are you connected to a managed switch? If so set a profile for VLAN6 and apply to the switchport via the controller. You shouldnt need to do anything at the AP itself. Other option is...

@symbiotic_ic Take a look at this forum post, a few of us have reported similar random traffic data. TP Link are aware of it and I think are investigating...

@RobAmann This does seem a strange behaviour, I would have expected that the laptop got 100% pings or nothing. 0.7 although a small amount is significent enough for LAN traffic Did you reteset this...

@Daveh555 Looks like Manno beat me to it Yes you are better connecting directly to the routers web interface to configure this.

@Martint235 Ah nice one, glad you got sorted!