forget about high end long distance router, as long there are multiple layers of wall

your wifi signal will reduce significantly and wont be able to achieve full speed of ur internet speed.
like most of ppl suggest above

solution from best to worst :
- drag ethernet cables if you can (best performance)
- ethernet to Access Point (and access point at somewhere center that can broadcast ur signal strong and stable enough
-powerline adapters, or powerline adapter + wifi built in ( not wifi repeater that rebroadcast wifi by connecting to existing wifi at main router)

(forget about wifi repeater, thats really not good for heavy bandwidth usage, not solid, not stable enough and performance could be bad)

This post has been edited by squall0833: Mar 23 2018, 12:21 PM