The OP also reports a "restart", whose description match what would happen if USC restarts... so we are going by our suspicion that it's related to the failure to start the compositor threads. The error logs in unity8 (USC's client) are irrelevant in that case.
@Daniel,
The OP also reports a "restart", whose description match what would happen if USC restarts... so we are going by our suspicion that it's related to the failure to start the compositor threads. The error logs in unity8 (USC's client) are irrelevant in that case.