I would open a bug report after trying a last time with a new, high quality sdhc-card.
ASIair was more than double the price and didn't support AZ mounts. This is why i decided to use Stellarmate, and it worked after optimizing some things and a libcamera bug, which was solved within a couple of days after updating.
In AA all the optimization is done already, but you have to pay the price, and AFAIK you can't just expand the system like you can in an open linux system like Astroberry or Stellarmate, browsing the www while capturing frames....
So, as my setup mostly worked, i switched to en EQ mount and decided to keep Stellarmate. I wouldn't call it "garbage" at all.

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