Hi,
I don’t really think there is anything that we can do here. If they only work with 32-bit clients (which again, is unusual… RSLinx is 32-bit but works through the 64-bit core component, for example), then there’s nothing we can do about that. The fact that you can only use 1.5gb of RAM in 32-bit java is also not something we can affect, it’s an architecture limit.
Searching around on the internet, I see that since DeltaV and OPC Remote are so difficult, people usually use a tunneller like Kepware or Matrikon to connect to the opc server remotely, instead of relying on OPC Remote on the opc client machine.
Regards,