I am keeping this here as a solution for anyone with a similar setup in the future. We installed a StarTech PCIe USB Expansion Card and connected 2 cameras directly to the Jetson and 2 to the PCIe expansion card. There is no longer any tearing, and we are able to launch all 4 cameras with ROS. So, I will mark this issue as solved. Two new issues spawned from the multicamera setup, but I won’t put them here since they are separate issues (startup issue, CPU utilization).
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