Dahua VBR Issues With Latest Firmwares

We have been seeing very unstable images recently out of Dahua cameras. This has been seen in a wide range of models, from a 12MP fisheye, 12MP bullets, 4MP fisheye, and 4MP bullets. The issue is that you get very heavy compression artifacting and screen flashing on P-frames when using VBR, even when using the highest quality setting (6).

This can be resolved by using using CBR, but for obvious reasons, that isn't desirable. This will waste bandwidth and storage.

Anyone else seeing these issues?

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