WAN Link aggregation

I need a little bit of assistance here.

I have a Netgear CM1150V cable modem which supports link aggregation via up to 4 1GbE ports, I think only 2 are supported right now.

I also have a RB3011UiAS board, which I would like to set up two ports as bonded ports for the modem.

Previously I tried this and my speeds actually got drastically slower almost like it was having a hard time doing the bonding in software or hardware not sure which.

I set up a bond on ether-1 and ether-2 as 802.3ad but not sure on any of the other settings as the modem provides no guidance on this.

When it set to use the bond as the WAN source at this point the internet is now slower, why? did hardware acceleration get disabled at this point? If so what am I missing? what can I look at? not sure where to start

Hey. What is CPU usage of Mikrotik while surfing or smthg?

When it’s doing a download while aggregated around 6-10% CPU usage, when idle around 1-2%

Bonding interfaces are software-based so can consume much CPU resource, AFAIK the only hardware-based support is CRS devices which have static (no 802.3ad / 802.1ax) link aggregation groups (certainly on 1xx/2xx, not tried on a 3xx).

There doesn’t appear to be much info on the Netgear, https://kb.netgear.com/000060393/How-do-I-set-up-Ethernet-port-aggregation-between-my-NETGEAR-Nighthawk-Multi-gig-Speed-Cable-Modem-and-my-NETGEAR-Nighthawk-AX8-router mentions that the bonding is 802.3ad, so you should just have to set mode=802.3ad and transmit-hash-policy=layer-2-and-3