hello hwbslr,
you must have correct NVCSI port and VI stream mappings.
please check this discussion thread, Topic 69753 for reference.
for example,
you should configure CSI-A/B for using 4-lane and sink to VI stream-0.
since there’re only 5 VI streams, the last two CSI bricks, each CSI-E/F and CSI-G/H share a single VI stream.