Debian 13 KDE - Weird Red Fuzzy Fonts in Konsole on my 4K monitor, but not 2K monitor - How do I fix this?

Hey folks,

This is a very weird issue.

I'm running KDE 6.3.4 on Debian 13 Trixie.

I have 2 x 2K monitor and 1 x 4K monitor.

On my 4K monitor, when i run 'ls -l' in 'Konsole' or 'Yakuake' the red font display is fuzzy, but it shows up perfectly on my 2K monitor.

I can't put in a screenshot to show you because the discrepancy only happens on my 4K monitor... If I drag the window to the 2K monitor, its all good.

Is there a KDE setting that I need change for the monitor?