RT2600ac MAX speed of 5G USB tethering on RT2600ac?

[marang]

Hello.

My phone's maximum speed of 5G is about the 300~400mbps.

but, Seedtest of 5G with RT2600ac's USB tethering is 100mbps.

Was it originally designed like this? if so how can I release this limit?

 

[Rusty]

Seedtest of 5G with RT2600ac's USB tethering is 100mbps.

That's in both cases (USB 2 and 3 ports)?

 

[marang]

That's in both cases (USB 2 and 3 ports)?

Yes. even if I connected to usb 3.0 port the result is the same.
However, when I use windows laptop with USB tethering, the Speedtest are the fully reached to maximum.

 

[Kufisw]

check if in wireless setting the checkmark "downgrade USB 3.0 device to reduce interference to 2.4GHz signal" is set. Just something that came to mind not sure if this could be the issue.

 

[marang]

check if in wireless setting the checkmark "downgrade USB 3.0 device to reduce interference to 2.4GHz signal" is set. Just something that came to mind not sure if this could be the issue.

Thanks for the reply.
I tested it as your guide but, did not work... it's same result.