Well I got the settings tuned quite well, after quite a lot of benchies with varying settings. I actually suffered heatcreep along the way so that probably also affected the results a bit. Especially this last color, red PLA seemed to suffer from it, the small columns were crap (you can just see the uneven extrusion on the second pic). After adding a filament oiler with a bit of olive oil the extrusion stabilized.

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There's still some artifacting from extruder wipe and the post-tower retract isn't 100% correct, but I think I'm gonna call it good for now. And maybe print something else, my armada is getting big enough already. Seems filament changes are working quite stable so far.
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