Wired connection slower than wifi

[TorePcit]

Hi everyone, I don't know why my wired connection achieve 150mb/sec in download, but the same computer can achieve almost 300mb/sec in download with wifi. I'm using a cat. 6a cable 2m in length (I also tried other cables). I tried to unplug everything in my router and leave just my computer, unfortunately the result is the same. There are not QoS settings and I disabled the firewall. My computer is a brand new nb, but I also tried other computers, all these computers have gigabit ethernet, and auto full duplex 1000 setting.

I don't know what else I can try, I hope someone could help me, thanks in advance 

[Flavio Miranda]

@TorePcit 

 Which network device we are talking about?

[TorePcit]

It's ADB-VM5722 router, Italian ISP provided it, it's a FWA 5g connection

[Flavio Miranda]

Seems to me like a fauty device, probably a bug. I would ask for replacement.

[TorePcit]

Ok, I'll call my service provider hoping they can solve the problem, I
don't know if they are going to change my router.
Thanks

[Flavio Miranda]

As per what you described on the problem, it seems to be a router problem. First, we all expect the wifi to be slower than wired, not the other way around. Second, if you connected more than one PC to the wired interface with the same result, we can not blame your PC, it is very unlikely you to have two PCs with the same issue.

 With that, all the option is pointing to the router they provided. If they were able to fix it, I would ask you to kindly share here and , if possible, what they did. 

 A firmware replacement on the router could be a possiblity but as far as I know , ISP work with sheap device so that they can just discard and install new ones not wasting to much time on that.

[TorePcit]

Of course, once I resolve I will post here the solution.
Yeah you're right they don't bother to fix the problem but they will change
the device instead. Anyway firmware is up to date, I have the same device
in my shop and work perfectly with the same firmware.
Thanks for your answer.

[Kasun Bandara]

@TorePcit how your PC connecting to internet? do you have switch in between ISP and PC? or do you have any firewall device? can you share more details.

[TorePcit]

Nope, as I wrote before, I tried to connect only my pc to the router
directly, no firewall, no switch, just my pc and the router, I tried
different cable and a different pc.