Kepserver Memory Leak

I have trouble with linearly increasing “Nonpaged memory” allocation. I inspect the memory allocation with RAMMap. 

Our machines server system keeps getting slower and slower, so we started investigating.

The picture above shows it: “Nonpaged memory” started at 776,088 KB after rebooting the HyperV. After that, it increased up by 5 GB in total.

Our setup is:

• HyperV with Windows Server 2019; Host is Windows Server 2022. 
• On the HyperV: KEPServerEX 6.15 / V6.15.154.0
  • Omron FINS Ethernet (16 devices; CJ2 PLCs)
  • Siemens TCP/IP Ethernet (1 device; S7-300)
  • OPC UA Server as the connector to our SCADA system (Running on the same HyperV)

In the second table, you can see that the memory allocation stops growing once I turn off Kepserver. There is one section where the memory doesnt grow even though the Omron acquisition is running. I think that in that case the time period is too short.

Questions:

• Did you ever face a similar issue?
• Any ideas how to solve it?
• What should I try?