Write these in config.cfg
These configuration settings are on the server
Defines how many times per second the client sends updates about player’s actions to server. Actions include all keyboard and mouse events. Actually anything above 66 is redundant because Setti is running with 66 ticks. Because server only updates itself 66 times per second it cannot handle more than 66 updates from clients either.
Defines how many times per second the client requests data from server. The higher this value is the closer client’s and server’s view of the game world is. Anything above 66 is redundant here too because the server cannot send more than 66 updates per second. If client requests more than 66 the server just limits the updates to server maximum.
If you are interested to get more valid information about rate settings you can read the following pages:
Both wikis include lots of useful information. These resources are by far the best that can be found in the internet. Do not believe what other people write on forums and message boards. Only trust what you read on those two links.