I understand you guys, but this network used to work pretty good with even less bandwidth, when I formated my router and had to re setup it everything has changed, that's becasue I think I haven't put all the filters and firewalls in the same way.
If somebody could help me by posting the needed codes or by chating online on a dedicated time whenever you think is the best time. This is my personal e-mail address: firstname.lastname@example.org
3M = 60 client?
Too many client require in same time
You can limit client speed(64kbit/s) and limit count(such as 20/s)
May be it can help you resolve the problem
In my client company I setup 10M and connect 200 client.
All client feel fast!