Hmm whats your monitor size by chance and whats the max resolution it'll take ?
I have a 19inch sansui and I have it at 1280x960 or 1280x1020.
I know your aiming for 125% but maybe that won't be happening the way you want it.
Try 100% for now and see if you can get along with that.
Also by looking at your screenshots, those icons look like there on medium settings.
Sort your apps by type, games go on one list, utilitites go on another and etc.
If I were in your shoes I would leave the icons hidden and use windows search to bring up whatever app I need.
Less stress on os in the long run.