@Telmo, which color and depth resolution are your sensors set to during calibration and livestreaming? For calibration, we recommend 720p color and either of the “raw” depth modes.
I saw in an earlier post that you were using a PC with the following spec’s:
Windows 10
12th Gen i9-12900KF
Mag z690 Tomahawk (MS-7D32)
Renesas USB 4 port Startech
NVIDIA GeForce RTX 3080 Ti
Cable Matter Extenders
Are you still using this 3080 Ti GPU? If so, this is likely contributing to the issue. Nvidia’s consumer GPU’s support up to 3 simultaneous NVENC sessions which is suitable for 3 sensor capture/livestreaming, but for more sensors, you’ll need a professional GPU like the RTX A4000. You can find more information here.
EDIT: A professional GPU is only required for RECORDING more than 3 sensors, and shouldn’t be necessary for calibration and livestreaming.
Can you also confirm in Device Manager what USB chipset the 5th sensor is plugged into? (See the device tree shown in our hardware documentation.)