You can host 0 players
* Recommended Upload Bandwidth for 0 players = 0
sv_maxrate "0" // Set this same as min. rate if you not have enough upload bandwidth
sv_minrate ""
sv_maxupdaterate ""
sv_minupdaterate "20"
//sv_maxcmdrate "66" // Use if you like
sv_mincmdrate "30"
net_splitpacket_maxrate "1048576"
//sv_competitive_minspec "1"
//sv_use_steam_voice "0"
// in CS:GO, maxcmd and maxupdaterate cvars are hidden and follow server tickrate automatically
https://developer.valvesoftware.com/wiki/TF2_Network_Graph