Don't know where you copy those rates but 30000 is pretty low rate for even 30 players server.
When server is full players and they start jumping and shoot crazy, there is lot of info to share to all players.
If server upload bandwidth allow, try min rate 50000 and max about... 100000.
rate = bytes per second
50000 B/s * 30 = 1500000 B/s
~1500 KB/s
convert to bits
1500 KB/s * 8 = 12000 Kbps
~
12 Mbps
But this how I'm calculating. Maybe wrong but close.
*edit
If somebody is willing share knowledge, using rcon (or type server console input)
Code:
] stats
CPU In (KB/s) Out (KB/s) Uptime Map changes FPS Players Connects
68.31 5.46 20.60 9 1 28.43 31 56
when there lot of action and players on server, of course set server min rate very high and max rate.
This example was 30 bots and one real players
*edit
Also, voice/mic communicate take server bandwidth.
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