What am I doing wrong?

I have two S3 Pros wired for power with HomeBase 3, E340 doorbell and S340 PTZ run through a Eero WiFi 7 with strong signal at all cameras. No matter what I do, no matter where I put the HomeBase, the cameras never fail to fail. On a good day there’s a 10 second delay, most it’s 30 seconds plus. The camera feed whether live or recorded are choppy and end up timing out. The two S3 Pros and HomeBase are constantly showing on the app as offline and needing to refresh which does nothing when I click refresh. I want to love these cameras but so far they’ve been a major letdown over the old Google Nest cameras they replaced. Eufy support gave me some suggestions but none worked. They’ve now told me to return them to BestBuy. Any other pearls of wisdom of what could be the problem before I pack these up and return it all? Thanks in advance for any tips.