First Hevo - need some setup guidance.
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It happens above and below the letters because the slicer is able to hide the seam on the inside corners of the indented letters. Above and below it has no choice but to place the seam on the sharpest corner.
Fortunately most models aren't cubes and there are usually better places to hide the layer seam. Sometimes it's best to align it into a single vertical line to keep from having little scars everywhere.
The seam can be minimized but it never really goes away. It's up to you to manage it and tell the slicer where you prefer to place it.
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That's the funny part - I have Slic3r configured to align the seam.
I'll take a pic with radom seam to see the difference.
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That looks exactly like what I would expect align to look like.
I suggest printing one cube with each option to see what each option looks like.
