LEDE for TP-Link H5R(EU) / AV500 Hybrid Wi-Fi Router

Hi there. Because of lack of new firmware update, and about a 40% loss behind the router compared to before the router (direct cable) connection, I'm desperately looking for a solution to fix my router settings/drivers/firmware/anything so I can have my full 300 Mbps symetrical connection. Is there any LEDE version that is compatible with that router?


Isn't that a powerline adapter?

Can you get the model of the router part instead of the kit? There is no openwrt build made for the kit obviously and I cannot find any details on which router is included in this package online.

Secondly, what kind of speed do you expect from a powerline adapter?