Well, I tried a fresh reinstall, but the issue persisted. The information I received through the support emails ended up with a 'we don't have a solution for this right now', so the best you can really hope for is the patience of your friends, and that the NCH team keeps working on this.
It's kinda frustrating, given that this is the best voice changer I've found for things like pitch-shifting without sounding unnatural.
I've also noticed that even after I close the program, I still lag. Which means that the issue might be with Discord, or possibly with some sort of background process from Voxal continuing after closing.
My computer has also crashed to a blue screen multiple times while using this. I've found it happens less frequently when I don't use Firefox (I use Brave instead), but I think it might have something to do with a lack of Windows 11 compatibility.
If anyone is interested, I can keep this thread updated with the kinds of tests I do to try and fix these issues.
If anyone knows how to do stuff with Raspberry Pi, I'd say that this issue might be able to be circumvented with a sort of external device running it. But I don't even know how to start with that stuff, so I'd be open to anyone taking that idea and running with it, so long as the NCH team is fine with it.
Again, this is a really good voice changer. I can get all sorts of neat effects that other programs like VoiceMod, MorphVOX, and the sort.
Changing both tone and formant is a surprisingly rare tool in real-time voice changers. If you need an alternative, MagicMic from imyphone has a preset that can be tweaked around a bit, and I haven't had any issues with latency with it yet.