You might not even need an extra download! FL Studio 20 comes with:
Waves offers a fully functional 7-day free trial of Waves Tune Real-Time. This is the best way to use it for a project immediately without bugs. descargar waves tune real time fl studio 20 gratis
The most secure way to get the plugin is through official channels to ensure compatibility and stability with FL Studio 20. You might not even need an extra download