RAX120 bridged slow 5Ghz wifi speed

[blackart]

ISP plan: 1000M

Router Firmware Version V1.2.1.22

RAX120 work as bridge mode as the following:

Main router(asus)     <-----wifi 5g------>  RAX120   <-----cat8 cable------> PC

5ghz: PC  got  75M (download),  700M (upload)

2.4ghz: PC  got  130M  (download)

If my PC use a typical usb wifi adpater instead of rax120 to connect main router, it got  250 Mbps. Other mobile phone also got 250Mbps.

I guess there are something in rax120 restirct the 5ghz connection speed.

Please help fix the issue. Thank you.

[blackart · Accepted solution]

thx for your reply.

My problem is fixed. I turned off Main router's 5ghz  AX function.

My PC now get 500Mb. 

[plemans]

What speed do you get if you connect the rax120 (in access point mode) to the Asus and test its speeds?

curious if there's an issue with the 5ghz or possible with it being in bridge mode. 

[blackart · Accepted solution]

thx for your reply.

My problem is fixed. I turned off Main router's 5ghz  AX function.

My PC now get 500Mb.