Sub Menus are too large

My system has a problem with Allegro 17.2. At first all of the text was to small to read and the icons too small to make out even with the Icon setting set to"large" I was able to resolve the issue by editing the properties of Allegro.exe  under the tab compatibility, then selecting "Change high DPI settings", then selecting the check box "Override high DPI scaling behavior" with the setting under "Scaling performed by:" set to "System". This definitely solved the problem when I re-opened Allegro, I was very happy!!! 

Until, I opened a sub-menu/drop-down. They open so large on my screen that the buttons at the bottom are not accessible and half of the text cannot be seen. This makes the program unusable. I've loaded the latest ISR and I also tried deleting the allegro.geo file but it had no affect. I'm currently at a total loss with deadlines looming... Help!!!