RB3011UiAS-RM - Gigabit Lan strange

Hi all,
I have a RB3011UiAS-RM router (OS 7.14.1) and I am experiencing a surreal situation.
On the local network I have a computer (I9 14gen with a 2.5gb network card) connected to a TPLINK gigabit switch (T2600G-18TS). In the Windows 2022 connection status it appears “connected at 1gb” and when performing a speed test through a LOCAL OpenSpeed Test server the result is this: (LAN speed practically 1gb)

However, if you connect the PC cable directly to the router’s ethernet port (in my case I used Ether6) the Speed Test result is well below 1gb, as shown below. Both in Windows and in the Ether6 connection status they appear “connected to 1 gb”

My Ether6 port belongs to a local Bridge.

On

/interface ethernet print detail

, the result of Ether6 is:

 5 RS name="ether6" default-name="ether6" mtu=1500 l2mtu=1598 mac-address=64:D1:54:85:03:70 
      orig-mac-address=64:D1:54:85:03:70 arp=enabled arp-timeout=auto loop-protect=default 
      loop-protect-status=off loop-protect-send-interval=5s loop-protect-disable-time=5m 
      auto-negotiation=yes 
      advertise=10M-baseT-half,10M-baseT-full,100M-baseT-half,100M-baseT-full,1G-baseT-half,
          1G-baseT-full 
      tx-flow-control=off rx-flow-control=off bandwidth=unlimited/unlimited switch=switch2

In summary: when I connect from a PC to a Switch that is connected to Ether6, the LAN speed reaches close to 1gb, but when I connect the same PC directly to the same port the speed is close to 100mb!

Is there a possible reason or configuration so that, if connected directly to the port, the speed reaches 1GB?

Thanks in advanced.

make a search in the forum before posting…
thank you

Hi, I’ve already done research on the forum, Stackoverflow and all over Google and I didn’t find any similar situation.
Thanks

http://forum.mikrotik.com/t/rb3011-ros-7-2-1-perfomance-issues/157431/1

@Maggiore81 IMHO, that’s not the case, with switch between router and client speed is OK

@pocci Have you tried to set 1Gbps for ether6 manually? Server has 2.5Gbit interface, it could be a problem for Mikrotik

Hello
The switching part is not an issue since it is a SWITCH.
Routing through the 3011, with v7 is an issue if you have a bridge.