I'd give these a try.

TP-Link AV600 Nano Powerline Adapter Starter Kit, up to 600Mbps (TL-PA4010KIT) https://www.amazon.com/dp/B00AWRUICG/ref=cm_sw_r_cp_apa_Hn2wAb62DKW5H

TP-Link N300 Powerline Gigabit Wi-Fi Kit , 2-Kit (2-Ethernet Ports) (N300) https://www.amazon.com/dp/B010S6SFDE/ref=cm_sw_r_cp_apa_Xo2wAb959HEYF

They've been life savers for me!