Help me go faster than ~60Mbps

Hi,

I think I should be able to go faster than 60Mbps over Wifi from my laptop. I have an RT-AC68, a 100Mbps connection, and a 2013 Macbook. I can get ~90Mbps downloads if I use a USB ethernet adapter.

I'm running Merlin's firmware 378.55_0. Some posts here mention that 55_0 is slower than 54_2, so maybe that could help. I've enabled hardware acceleration, QoS, WMM, and pretty much everything else I could find.

Here's the wifi connection details from my Macbook:...

Help me go faster than ~60Mbps