Configure NTP on your windows 2008 R2 Server might help in this situation. If the clock / time is different on the Project Server and the SQL server. If the time difference is 1 min on the SQL server. The job will sit in the queue for 1 min till it gets processed. This has been addressed with some later updates, but you would want to make sure that you have the server in sync as well.

This should to the trick: 

w32tm /config /computer: ad ip  /update

net stop w32time

net start w32time

 if

The computer did not resync
because no time data was available.

 

Start from scratch, you can always do the following command and it will completely erase and add a default W32time configuration:

 

net stop w32time

w32tm /unregister

w32tm /register

 

PS: disable Hyper-v time sync feature if you are using it and have a NTP server as well