it seems your UI is scaled heavily. Go to your houdini folder (USER/DOCUMENTS/Houdini) and check the ui.pref file in a texteditor. Maybe you can try removing it first from the folder so that houdini rebuilds your UI. Otherwise open it and see what those two parameters state: general.ui.icon_size := "Normal"; # Sizes may be Small, Compact, Normal, Large, or Extra Large. general.ui.scale := 1.5;
the smaller the number at general.ui.scale the smaller the typo and icons gonna be..