I went to the f@h forum, but, didn't see anything about changing it.
I apologize for bugging you so much.
Open the directory that F@H is in.
Edit the file client.cfg. It may show up as a single line. That's Ok.
Scroll across to Checkpoint=3 and insert a '0' after the 3. Save the file.
Do the same thing to the other F@H folder.
Reboot and you should be fine.
My F@H client.cfg file:
[settings]
username=Texas_Booster
team=36120
asknet=no
machineid=1
local=7
[http]
active=no
host=localhost
port=8080
usereg=no
[core]
priority=96
cpuusage=75
checkpoint=30
[clienttype]
type=3
CPU usage is set at 75% since this is from a low cost laptop. I don't want to chance overheating the system.