Xibo 2.0.0 Tasks not working right

Xibo version : 2.0.0
PHP Version : 5.6
MySQL version : 5.7.25
Docker : No

I installed Xibo version 2.0.0 on the same server I’m running version 1.8.12.
I’m using the same XMR as version 1.8.12 which works great.
The XTR is running on both versions, so every Xibo instance uses his own XTR.
I configured the cron-job for version 2.0.0 the same as the one from version 1.8.12.

I discovered that however the cron-job runs the tasks are not always proccessed.
For example I have a playlist that says it’s calculating the playing time. I know the calculationproces
is a task. But most at the time it won’t calculate the size of it. Somethimes when I run the cron-job manual it will calculate the size and run the other tasks. I can see that because the times in the task changed after running the cron job.

How can I find out why the tasks are not running as it should? Or did I found a bug?
Other cron-jobs I use on my server are running fine. And for the record, I use the same user as the one I’m running apache with.

Edit : Just installed PHP 7.2 because i saw that Xibo2 is tested with PHP7.
But I see no difference.

Problem solved, found it in my cron-job settings. The tasks where processed every hour.
Didn’t saw it. Now the tasks works perfect.