Multiple clients on one json with different state

i wondered how to be able to have the same json in two browser windows/tabs but with unconnected/different state. currently loading a state in one browser and another state in another browser (loaded the same json) seems not to be possible. the usecase is that i want to control two instances of the same synthesizer addressed with a parameter in the state. is there a trick to achieve that?
thx.

It’s not possible currently without running two servers. I’m considering adding an option to disable client sync.

isn’t it possible to set bypass to true for root and use remote control with /STATE ?

Setting the root's bypass to true would just avoid tab synchronization, it work if the session consists in two tabs, each controlling a different synth, but only if the widgets they contain have distinct targets/addresses.