The newer CRS series has performance issues with bridging/routing (L3 max. 60mbits, VLAN Bridging 175mbits max). The switch chip can handle VLANs at wirespeed.
A tutorial that explains how to bring "untagged ports" into a VLAN using the switch chip only would be a very nice addition to your VLAN playlist. This would fill a gap in documentation of the CRS, too.