Audio Dropout Issue in Livestream Setup

I'm experiencing a persistent issue with my audio setup where the sound drops out every 20 seconds during both streaming and recording. My current setup includes a Soundcraft Impact SI mixer, a Mac running Studio One, several Waves Plug-ins, and Mixing Station. This configuration has been reliable for over a year, but the problem started over a month ago.

I've already checked all cable connections and updated the firmware/software, but the issue persists. There are no error messages or alerts when the sound drops out, making it challenging to diagnose the problem. I've consulted with several computer and audio technicians, but the problem remains unresolved.

Key Requirements:
- Expertise in troubleshooting audio equipment and software setups
- Familiarity with Soundcraft Impact SI mixer, Studio One, Waves Plug-ins, and Mixing Station
- Ability to diagnose and resolve audio dropout issues without error messages
- Experience with livestream broadcast setups

Ideal Skills and Experience:
- Strong background in audio engineering and technical support
- Knowledge of Mac systems and audio interface configurations
- Problem-solving skills and attention to detail
- Excellent communication skills to provide clear guidance and solutions

I need urgent assistance to resolve this issue before our next online broadcast. If you have the expertise to help, please reach out.