is that still state of the art, and does it work with VLANs? I'm looking to implement something like that.

Thanks,
Florian
Maybe not - 6.40.5 seems to show the same issue; didn't test 6.41rc thoughThe main issue seems to have been addressed in recent versions
/ip firewall filter print chain=forward
/ipv6 firewall filter print chain=forward
Thanks! I have to RMA my device due to a hardware issue, so not sure if I get a hand on testing before I send it to the distributor - so I'm glad you confirmed.I can confirm that this happens on 6.41rc11
Putting off power from the device for an hour seems to have helped, having a sync with 1 Gbps again now.I more and more think it's hardware-related.
I just put a switch in between the heX and the cable modem, and voilà, full sync with 1 Gbps
> /system routerboard print
routerboard: yes
model: RouterBOARD 750G r3
serial-number: ###
firmware-type: mt7621L
factory-firmware: 3.34
current-firmware: 3.35
upgrade-firmware: 3.35
always-broadcast=yes
server=lan
/ip dns set allow-remote-requests=yes servers=2001:4860:4860::8888,2001:4860:4860::8844,8.8.8.8,8.8.4.4