I was surprised by the dlink 868L

[Metroguy]

I am using Asus RT-AC88u which is 4x4 router in my house while my grandparents house is using a Dlink Dir868L which is 3x3 router form 2013. Both houses are using the same isp plan and provider which is 500mbps. Clearly the Asus is a superior router in spec but when I used the WiFi in my grandparents house the dir868L seems to be faster performing than the Asus . The Asus always had some kind lah or delay.


This makes me think that somehow the dir868L has something going for it.