Yes being at a resolution of 4K (3840 X 2160) is the issue here and why the usual settings didn't work especially scaled to 350-400%
(4 x normal size) , so thanks for clearing that up for Others in the future.

The App in Post #104 may not have helped in this situation either , I use it at 125% scaling , The Advanced version also does many of the Other Windows "Metrics" as they are called like Scroll Bars and Menus Text Size etc , just like Shaun's Other Tutorials on these things. If you look at the Pic above there is also a Default Button to return everything to Normal , click it , then Change and reboot.