We had tried it with 40 and 30 on our server.
There were more complains about "lagg" when this settings were changed.
20 is the best value, but at least just on our server.
The mod itself support the the change of this value.
For example:
wait( [[level.ex_fpstime]](1) );
With that value of level.ex_fpstime the mod calculating the speed depends on the fps. But if you changed some part of your own
or you playing some custom maps, that it makes conflict as all custom maps used only wait(1); The timing there can be destroyed.
We have not noticed any timing problem on our server when we tested this value (stock maps).
Regards,
{NADF} Geronimo