I don't really know why this happened. The mod was working very well, like exceptionally, then I started a new deathworld and there were no more labels.
I tired uninstalling and reinstalling it (and the command for re-taging in-game). Playing around with the settings but nothing helped. When I start a new world, I get the lag spike in the beginning as per usual (when you set the radius to ~40 it starts laging for me), but no labels.
I'm on 1.1.33 with the mod version 0.7.25, I'm using some other quality of life mods (bullet trails, waterfill, auto deconstruct...), but none that should interfere with it (and it also worked up until today). So yeah, I dunno what is going on, but if any of you have any tips, I'd love to hear them :D.
jerocom