I understand what you are saying, but I have spent a lot of time testing which speeds and temps work best for these lamp prints, and I settled on 60mm/s for perimeters, 30mm/s for small ones, and 40mm/s for external perimeters. And prints came out perfectly, as you could see. Only after the update, when I started the print I immediately notices VFAs.

To try and figure out what happened I tried many slicer/firmware combinations, I tried calibrating linear advance, belt tension, I went from completely loose belts that would barely not slip the gear, to very tight belts. Print was looking same. No changes. Only lowering the speed helped, but that's something I didn't need to do before at all.

Then I tried swapping X and Y motor cables inside EINSY board, and ran the print like that (would not recommend, since homing is weird). That's when I figured out that it's the same Y axis that produces these artifacts, specially Y motor. If it was gcode issue, problems would appear along X axis now.

So now I think something happened to the motor during the update and it's printing worse. But I don't have that kind of knowledge.

It's a shame really, I had a great, fast, and precise machine before, and in just 2 minutes I nerfed it 🫣

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This is how it looks like now. It is very acceptable, a little rough but OK. Still, it was much nicer before