This plugin served me well in the past but I can no longer recommend it for general use.
I used StreamFX for a single source and filter. I don't need 90% of what StreamFX offers, and I would rather not have to jump through a bunch of hoops and/or paywalls, while also potentially dealing with the usual open source developer mindset that is unfortunately common (ie. your feedback or issue is bad or wrong, our code is infallable and free of issues, nothing is ever our fault and is always the users fault. If you have a problem then code it yourself), just to use a single filter on the latest stable version of OBS 29.
Currently, the only version for OBS 29 is officially available via Patreon. I don't have a problem with paywalling of pre-release versions in general, however when the latest stable version of StreamFX hasn't been updated for over 2 (likely will be 3) stable versions of OBS, that's where the move towards monetization becomes sour for me.
Seeing how there hasn't been a stable release for so long, I consider StreamFX to be depricated and should be treated as such. I highly suggest finding alternatives wherever possible. Source Clone by exeldro is a great alternative to Source Mirrors, and is what I am now using.