I use a Synology router RT2600 ac  for my network and its great , however i was struggling to get a decent WIFI signal on my back garden.   I can get a strong signal on the front so its mainly down to where i have my main router situated.

Rather than mess around moving it,  i’ve purchased its little brother the 2200 to act as a mesh system and placed that at the rear of the property in the kitchen area.

The great thing about mesh networking is that its a seamless changeover to the strongest signal without any dropouts or configuration.  ive now got full bars in and all around the property now 🙂