OPC error

Hi Team,

We are using PLC connect v6.03 Standalone Server with Automation Builder 2.3.0.1431

There are total 10 controllers with same configuration, all are communicating with single PLC connect Server.

We are facing issues with values updation of one controller (loading 25%, max = 100%, Min = 21%, Avg = 34%) in PLC connect.
That takes 2 to 5 minutes to update the values in SCADA, However other's are updating within 1 sec.

Observations:-
1. Value status: Good
2. In OPC tool box demo client, updation rate is 1 second.

Please let me know, What is the cause of this issue and solution.

I am attaching the OPC with some other supporting files for your reference.

Thanks in advance.