540p problem clue

[AARP41298]

Im using prismatik (ambilight diy) and it need screen capure

Firefox natively allows it, and with this plugins the experience is improved
But not enought like the netflix-4K-DDplus edge plugin (with best quality 5.1 audio)

I want the best of the best
And edge plugin offer that without screen capture
A solution that i found is runing edge in sandboxie BUT that breaks the video improvment

searching why firefox allow screen capture i found this

Firefox for desktop supports the Google Widevine CDM for playing DRM-controlled content. Firefox downloads and enables the Google Widevine CDM by default to give users a smooth experience on sites that require DRM. The CDM runs in a separate container called a sandbox and you will be notified when a CDM is in use.
You can also disable a CDM and opt out of future updates by following the steps below. Once you disable a CDM, however, sites using this type of DRM may not operate properly.

It seems like sandboxie and the firefox sandbox works in the same way, locking the content in 540p

netflix 1080p firefox

Sandboxied Edge with netflix 4k ddplus

edge with netflix 4k ddplus