FabFilter

Dear community,

I have an external synth connected to ableton 12. I use Fabfilter Pro Q-3 on the channel where the synth is connected.

When I press the solo button, the part of the spectrum which I am trying to solo, is soloed, but the whole spectrum keeps playing. This is opposed to soloing out from a plugin, where I only hear the soloed part.

Would somebody know how I can solo a spectrum from the external synth, without hearing the rest of the spectrum?

Thanks for helping out!

Kind regards
Sebastian