UI scaling isn't working as it should: both Legacy games

I have bought the Birthday bundle while already having the Sims 2 Ultimate Collection before. The problem I come across is with the UI on both The Sims and The Sims 2 Legacy games. The game itself scales wonderfully, but the UI is jagged, blurry, enlarged.. not as it should be. 
For example, my Sims 2 Ultimate collection (patched/modded to work) has a sharp, clean, properly sized UI. It seems like the rendering of the UI in the legacy editions are incorrect?

My screen resolution is 2560 x 1440 and I have a 165hz monitor. But this should not be the issue as I know the Ultimate Collection CAN work with a normal UI size. Anyone else has this problem and found a fix for it? Switching to a different resolution didn't resolve anything, only making it unbearable to look at and in none of the resolutions do I get a sharp UI that is not larger than it should be.

In the attachments you can see (Create a Family screen for comparisons) the larger UI on Legacy and the sharp UI in Ultimate. The games are on the same resolution, 2560 x 1440.

Please for the love of god consider this for the upcoming patch.. 😵 And also Borderless Windowed mode please..