TP-Link Power Line Adapater keeps lossing internet but lights stay on
As the title suggests I'm having connection issues with my powerline adapter. I have 5G internet so it's saying the speeds to the output device is over 400Mbps. Quite strangely though my flatmate's computer and phone will occasionally lose internet from the adapter while all lights remain lit-up on the device, even when using an ethernet cable for the laptop. And it's not the whole internet dropping out either as it will still be working on my end and the laptop will switch to the main router, albeit with a weak connection (hence the powerline adapter).
I've disabled the power-saving mode and there is no regularity to how often it happens. It can be twice in one day or it can not happen for days on end. Unplugging it and plugging it back in seems to make it work which makes me think it might be an issue with the firmware crashing or something?
Any help would be massively appreciated!