A weakness of the SFZ sampler format is that for normal humans, it is difficult to write the code required to do more than basic key mapping. Most SFZ files don’t include midi CC & modulation capabilities, because these are defined in the code
Solution: Use a synth or sampler plugin that doesn’t rely on SFZ for these things:
* TX16Wx
* TAL-Sampler
* Altitude
* Bliss
* Serum 2
* Falcon
* ….etc