How to view Dahua cameras without browser plugins

Maddeningly , both waterfox and firefox act the same.. extremely glitchy on the web interface and will not consistently let me draw lines on the camera image. I tried SmartPSS , but cannot figure out for the life of me how to get to draw the IVS lines.. there's only this mystery IVS Rule check/no-check option on right clicking in the Live-view. I see this in SmartPSS:

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So.. the browsers arn't working because it keeps getting "stuck" on clicking around .. there's no clear way to get it to work reliably.. it's just reload the page and pray clicking works.. (and then no clear way to exit clicking if you're lucky enough to have it let you draw lines at all... ).
The latest firmware for the 4 series L and AI all work with Chome and Firefox without a plugin, what NVR are you running? also newer cameras with the GUI 5.0 are fine as well.

DHI-NVR4216-16P-AI/ANZ which is actually EI interrnational firmware V4.003.0000000.0.R, Build Date: 28-03-2024 running fine on Chrome.


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