Wifi speed dsl-ac68u

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New Around Here
Hello everyone, I have a dsl-ac68u connected in wan mode to the 1Gbit fiber. I connected my pc to the 5ghz wireless network and did some speedtest. I can not exceed 350mbit of speed although with other wifi I reach 600mbit. On the router page it says I'm connected to the pc at 866mbit and the same says windows. I set the channel bandwidth to 80Mhz and left everything as default. How is it possible that it doesn't go faster?


Part of the Furniture
Do you have all hardware acceleration options enabled? Are you running QoS (it disables HW acceleration)?


New Around Here
Where do I check if I have hardware acceleration enabled? QoS is disabled, traffic analyzer is enabled.
It is normal that if I connect two devices in wifi (866mbit from asus page) and transfer a file I get that from only one device at a time I reach 350mbit, if I transfer one file to two devices at the same time the speed is halved on each device so I will have about 200mbit for each device.
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