I can confirm the image file works after untar-ing. And it, or at least Libre-Office Calc) is indeed significantly faster, the same test as in post #2560 gave these results:

- swap on sd, ED w. Estel's image 'installed' an emmc partition: 75,55,50
(previously 80,70,65)

The UI also reacts better, before I sometimes had to click the menu bar twice to open a pulldown menu.

@ Estel: it looks like the Chromium extensions you installed did not carry over into the image file.

Edit: test results added