Here's the standard setting for different server tickrates:
Tickrate 33 : This tickrate is default tickrate on Source. It uses very minimum CPU/RAM/Bandwidth but registrations or updates are slow between server and client. Suitable only for private and test servers with less than 10 players.
JSON:
-tickrate 33
sv_maxrate "30000"
sv_minrate "15000"
sv_maxcmdrate "34"
sv_maxupdaterate "34"
sv_mincmdrate "33"
sv_minupdaterate "33"
Tickrate 66 : This tickrate uses average CPU/RAM/Bandwidth, registrations or updates are fast between server and client. Suitable for running most of the dedicated servers having minimum to huge number of players.
JSON:
-tickrate 66
sv_maxrate "60000"
sv_minrate "20000"
sv_maxcmdrate "67"
sv_maxupdaterate "67"
sv_mincmdrate "66"
sv_minupdaterate "66"
Tickrate 100 : This tickrate uses high CPU/RAM/Bandwidth, registrations or updates are very fast between server and client. Suitable for running dedicated servers with competitive mode or warmod.
JSON:
-tickrate 100
sv_maxrate "80000"
sv_minrate "30000"
sv_maxcmdrate "101"
sv_maxupdaterate "101"
sv_mincmdrate "100"
sv_minupdaterate "100"
Tickrate 128 : This tickrate uses very high CPU/RAM/Bandwidth, registrations or updates are lightning fast between server and client. Suitable for running LAN servers with competitive mode. To run dedicated server on this tickrate, you will need a good CPU, more RAM and more bandwidth.
JSON:
-tickrate 128
sv_maxrate "100000"
sv_minrate "40000"
sv_maxcmdrate "129"
sv_maxupdaterate "129"
sv_mincmdrate "128"
sv_minupdaterate "128"