Test set up.
Network: HKBN 1000mbps
Router: ASUS RT-AC87U
Distance: 5m away from router with the signal passing through 1 wall.
PC: CPU:i7-5820K @4.0GHZ
CPU cooler: Corsair H80i gt
Case: cooler master N400
Ram: Kingston DDR4-2133MHZ 8GBX4
Mainboard: Gigabyte X99-UD4
Graphics Card: Sapphire Tri-X R9 390X 8G D5 X2(One disabled)
SSD: Samsung 850EVO 500GB
HDD: HGST Deskstar NAS 4TB 7200RPM
PSU: Corsair HX1200i
OS: Windows 10 standard version (Box set)
Result with ASUS USB-AC56
Result with Dlink DWA-192
Result with both of them
Sorry for not using Chinese, because I don't know how to input Chinese in Computer.