Solution:

The computer may be overloaded. To reduce overrun errors 1. Try increasing the poll times for the individual datablocks. 2. If the overrun errors are sporadic or only occur when the driver starts, try phasing the datablocks so that the driver does not attempt to poll all the datablocks at the same time. 3. If your datablocks are phased, try stopping and restarting the driver since phasing only takes place when the driver starts.