Distributed testing: Cannot load the remote project. Reason: Timeout Expired

Hi,

We have a master machine with a Master suite that start our Slave suite (UI tests) on different VMs.

The master machine and the VMs have all the same version of TestComplete and TestExecute (12.10.590.7).

Recently an exception is causing us a lot of issues. 

When we run the tests from the master on our VMs, sometimes it is not working because of the exception:

"Cannot load the remote project. Failed to invoke an object. Reason: timeout expired" and "Cannot close the remote instance of TestComplete(TestExecute). Object disconnected". (Please see the screenshot)
This exception seems to occur when the task associated to the VM is the State 2: Initializing.

This exception is not happening all the time and not always the same VMs. It is causing a lot of problem for us because we need to repeat the tests that didn't run again and again.

What is the timeout which is mentioned in the exception ?

Does anybody has faced the same issue ? 

Thank you for your help,

Camille