Timers seem to stop working, randomly and out of time at times.

I'm creating the timers, I've checked to ensure that the brackets are placed properly.
It's mostly the one minute timer that stops working 100%.
It's a global SetTimer (created on OnGameModeInit)
I use foreach and I also Kill the timers OnGameModeExit.

Are there any other factors to continue, I don't do any saving per minute on the timer to MYSQL or anything like that.

It includes the timer for /ajail etc.