A couple of hours ago I tried to use Ethernet 11 and 12 instead of Ethernet 1 and 2 and it seems to work perfectly: latency to the RB1100AHx2 is constantly at 1ms and no packet loss for the packets that goes through the RB1100AHx2.
Incredible
thanks

yes and notting has changenged

I have the same problem. I installed a couple of new RB1100AHx2 on my network and I configured them as traffic shaper with HTB. The cpu is OK, about 25% of utilization, but I see packet loss at about 2% and latency issues, also the RB1100AHx2 responds to ICMP with variable time (from 1 to 40 ms) . I...