While mixing I was getting confused and frustrated that my mix was not hitting -1db while sounding loud enough. I then loaded mastered songs from YouTube, one was hitting- 3db on the mixer meter.
I then checked the stock master strip plug-in that also shows dbs and found the levels were higher than the ones in the mixer window so I advise you to ignore the mixer values.
Edit- I think the 12 db marker on the left is where 0 db should be. confusing because the 0 marker on the right at the highest point says 0 but when you push sounds especially bass anywhere close to it even with a soft clipper it sounds distorted.
Edit 2 - I bought toneboosters barricade set the ceiling to 0 db and it confirms what I thought 0 db is not where the mixer channels say it is. It’s around where my first pic indicates.