Max speed WAN not 500 mbps, but drops to 183 mbps

RouterOS Beginner Basics
1

I am using a new Mikrotik CRS125-24G-1S-2HnD router. It is connected to a 500/500 mbps down/up fiber Experia V9 box.
When connection my laptop directly on Experia LAN port 2, I get 508/512 mbps down/up as it should be.
But When I then connect the laptop via my port 10 on the Mikrotik, and connect the MikroTik WAN port to the same Experia port 2 the speed drops to 183/186 mbps down/up.

Any tips?

2

CRS is quite slow as a router, it is intended to be mainly a switch.

3

Try fasttrack. It will help with natting performance.

4

My recommendation is RB850Gx2 as a minimum.

5

I can do 500Mbps natting with RB2011 and FastTrack at 65% CPU, but not if the port is in a RouterOS bridge.

But I see this is a symmetric connection, so I don’t think the RB2011 would be able to max out the pipe, even forgetting about the bridging limitation.

6

In any case you would be right at the limit and any configuration change would probably impact your bandwidth, not really a great situation.