Speed slower after upgrading

RouterOS Beginner Basics
1

Using: CRS125-24G-1S-2HnD-IN

Upgraded from 150/15 down to 300/20 as of today.
Speeds went down to 30-50down/20up.

When connecting directly to my PC by only using my modem, my speeds are 300/20, no issues.
Using the router, the speeds throttle down.

Any ideas?

Thanks

2

CPU load?

Mind that CRS series are switches, their routing capacity is nowhere near wire speed.

3

CRS125-24G-1S-2HnD-IN is not a router.
It’s a switch with a little L3 capability.

4

You may have some Queues to limit the bandwidth.