In a old thread (that I only noticed recently) it was mentioned that each SSID uses 2.3% of bandwidth. Not seen that figure mentioned before.
I use a lot of SSIDs (12) to segregate, assign and control different groups of school laptops. If this is correct I would try to use far fewer.
Any comments about the BW implications per SSID or other reasons for/against numerous SSIDs welcome. Thanks.