After adding replica tunnel - websites go down often

I just added two replicas for the first time to my Cloudflare setup. Before adding the replicas, it seemed my websites always were online. When I added the replicas, they seemed to go up and down every couple mins.

Cloudflared Devices:

  • unRAID docker
  • Proxmox LXC
  • Raspberry Pi 4 Ubuntu headless

Any idea why this is and how to fix it?