I fixed my issues by using only the switch chip (and thus not routing traffic via the weak CPU), more info here http://forum.mikrotik.com/t/vlans-with-switch-chip-crs125/100157/1
I fixed my issues by using only the switch chip (and thus not routing traffic via the weak CPU), more info here http://forum.mikrotik.com/t/vlans-with-switch-chip-crs125/100157/1