I perfectly placed all letters in the font self guide template Ai file and exported OTF, now the font works well and spacing is fine, one issue: when you give the font a high font size the glyphs look like they are low res rasters, And the vector paths also liik like polygonish a bit rather than crisp and clear infinite zoom vectors. Let me put a comparison screenshot…
Here is what it looks like in Illustrator:
https://prnt.sc/Dd5GmOK5Q4PL
https://prnt.sc/SVlLrzwzT25G
And here is what it looks like when OTF fontfile (Or TTF) is in use …
Here is what my font self setup looks like: