How to change font size?

[boognevatz]

I'm able to change the font in system menu (Style). But I'm unable to set the font-size, which results missing pixels the font I'm using (Terminess Nerd Font).
Here is a screenshot of the problem:

As you can see all the right leg is missing from the letter "M", also it is the same for letter "W". Maybe I need to adjust the fontsize just a 0.1pt or so.
The font is pixel perfect otherwise, just one row of pixel too narrow.