As a follow-up and for future reference, I had to tweak a bit more (see the pictures of before and after). My line shifts are:
| speed | line shift | initial offset |
|---|---|---|
| 100 mm/s | 1.475 | 0.00 |
| 200 mm/s | 2.825 | 0.00 |
| 300 mm/s | 4.150 | 0.00 |
| 400 mm/s | 5.450 | 0.00 |
| 500 mm/s | 6.750 | 0.00 |
I found these by trial and error and adjusting a tiny bit more or a tiny bit less
(using cardboard for testing). I also attached the lightburn file I used.
before (with @cmachtel 's numbers)
after
line-offset.zip (29.7 KB)
The test file with different speeds.

