The message is not from SONAR its from the UAD plugins.
Several years ago we added custom chaining support for UAD plugins. This allows UAD plugins to know when there is a series of plugins in a circuit and optimize by keeping the signal flow on the UAD bus.
I assume that the warning is telling you about this. If there is a way to disable it it would have to be in the UAD plugin UI not SONAR.
The reason this doesnt happen in X64 is because bitbridge cant handle the custom UAD opcodes that we implemented in SONAR.