In the meanwhile, for recording purposes, you could perhaps try,
- either the EqualizerAPO audio enhancement software,
- or (one of) the VoiceMeeter / VoiceMeeter Banana / VoiceMeeter Potato virtual audio mixers.
EqualizerAPO, VoiceMeeter, and VoiceMeeter Banana are completely free to download and install, but the Potato version only comes as a 30-day trial.
The point is: I’m pretty sure they all offer the advanced EQ options you’re looking for (see printscreen below), ànd, providing your computer is powerful enough, they should be compatible with FxSound as well.
The downside to the VoiceMeeter software is that it’s quite tricky and complicated to get set up properly - but you can find all the info on their website, and once you’ve got it running, it does work flawlessly.
(By the way, please don’t ask me what the differences are between the three VoiceMeeter versions, because I honestly have no idea! 
I simply picked the Banana version for my laptop, and it did what I wanted it to do…)
This is a link to the documentation on EqualizerAPO,
this is a link to the VoiceMeeter manual,
this is a link to the VoiceMeeter Banana manual,
this is a link to the VoiceMeeter Potato manual,
and we also have a thread here on our forum where one of our users, @IrONHEad, was kind enough to summarize the setup process in a nutshell:
EDIT: