I don't have this issue with the Mini V3, TBH, even at 60%.
Maybe my screens aren't as high DPI as some of you or maybe are better color calibrated, helping with a better screen contrast?!
The only "hard to see" issue I do have is with the Jup-8 preset center "display" (Red text over grey background). Other than that, besides the instruments that didn't get the same very high-res GUIs (looking slightly fuzzy on high zoom levels), they all look great and readable to me.
At what Zoom are you trying the Mini V3 and what's your screen (physical) size?