Hey Toni and thanks for these constant updates!
Just tested the new 2.4.1b3 version and it's the first one that Ratte's SuperPlus driver works just fine (at least vertically)!
I just used these settings:
and this is how my A600 clone environment looks under the new beta:
Vertically it's 100% perfect. Horizontally it needed to be some pixels to the right.
I tried both Centering options (Horizontal and Vertical) but it didn't made any difference.
I also checked HighGFX and Vertially is 99% perfect as well. Horizontally though it's worse than SuperPlus as it needs A LOT more pixels to the right.