Hello everyone. I'm trying Ubuntu mate, and i have a weird problem. it seems like scaling is quite off. it happens on discord and firefox especially. the scale seems to be at like 125% all the time. firefox buttons and tabs seems to be bigger than they are supposed to be.
anything there's to do? if it matters, i have nvidia gpu
Welcome! I'm going to guess the font DPI is larger then normal. You can check or adjust this value in Control Centre → Appearance(Look & Feel) → Fonts tab → "Details" button:
The DPI is normally 96 for a regular 1920x1080 (1080p) display (as suggested by your screenshot), try changing this value.