I use my 5D2 for paid work, I have links to stable builds I trust.
But they are not from the latest nightly builds. PM and I will share them

I film News Stories & Short Docs. in a Run & Gun Style and I can't afford to loss even 1 second
of footage from a software crash & or lockup . Once the monument has happen it gone forever !
I use the HDMI a lot for backup to MLV Raw with a Ninja with prores.
I found 6+ mouth old build better for that. That why I trust the builds I do.
Plus I still can get 1872 instead of the now limited 1856.
