Context:
3 IP cameras using one point-to-point Ubiquiti radio link.
1 camera is a Dahua IPC-HFW2431S-S-S2 (4MP) and the other 2 are cheapo Nivian cameras (5MP) which will be replaced soon with decent cameras.
All cameras running at 15fps, keyframes 15, H264, the Dahua at CBR 6144, the other...