All Tk based apps have huge buttons
 

This is strange. All Tk based programs now have gigantic buttons. Is there somewhere that default sizes are stored or cached? Im not too familiar with Tk in general. Thanks in advance

Large buttons on TK apps
 

In general there are directories with small, medium and large buttons.

In general there is a menu configuration item to change that. I cannot tell you where that is but hunt around the menus; especially the configure this or configure that menu items.